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Merge branch 'akpm' (patches from Andrew)

Browse Source 
Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...
This commit is contained in:
Linus Torvalds 2021-07-02 12:08:10 -07:00
commit 71bd934101
299 changed files with 6305 additions and 3275 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Documentation/admin-guide/kernel-parameters.txt
View File

@ -1594,6 +1594,23 @@
Documentation/admin-guide/mm/hugetlbpage.rst.
Format: size[KMG]
hugetlb_free_vmemmap=
[KNL] Reguires CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
enabled.
Allows heavy hugetlb users to free up some more
memory (6 * PAGE_SIZE for each 2MB hugetlb page).
Format: { on | off (default) }
on: enable the feature
off: disable the feature
Built with CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON=y,
the default is on.
This is not compatible with memory_hotplug.memmap_on_memory.
If both parameters are enabled, hugetlb_free_vmemmap takes
precedence over memory_hotplug.memmap_on_memory.
hung_task_panic=
[KNL] Should the hung task detector generate panics.
Format: 0 | 1
@ -2860,6 +2877,10 @@
Note that even when enabled, there are a few cases where
the feature is not effective.
This is not compatible with hugetlb_free_vmemmap. If
both parameters are enabled, hugetlb_free_vmemmap takes
precedence over memory_hotplug.memmap_on_memory.
memtest= [KNL,X86,ARM,PPC,RISCV] Enable memtest
Format: <integer>
default : 0 <disable>

11
Documentation/admin-guide/mm/hugetlbpage.rst
View File

@ -60,6 +60,10 @@ HugePages_Surp
the pool above the value in ``/proc/sys/vm/nr_hugepages``. The
maximum number of surplus huge pages is controlled by
``/proc/sys/vm/nr_overcommit_hugepages``.
Note: When the feature of freeing unused vmemmap pages associated
with each hugetlb page is enabled, the number of surplus huge pages
may be temporarily larger than the maximum number of surplus huge
pages when the system is under memory pressure.
Hugepagesize
is the default hugepage size (in Kb).
Hugetlb
@ -80,6 +84,10 @@ returned to the huge page pool when freed by a task. A user with root
privileges can dynamically allocate more or free some persistent huge pages
by increasing or decreasing the value of ``nr_hugepages``.
Note: When the feature of freeing unused vmemmap pages associated with each
hugetlb page is enabled, we can fail to free the huge pages triggered by
the user when ths system is under memory pressure. Please try again later.
Pages that are used as huge pages are reserved inside the kernel and cannot
be used for other purposes. Huge pages cannot be swapped out under
memory pressure.
@ -145,6 +153,9 @@ default_hugepagesz
will all result in 256 2M huge pages being allocated. Valid default
huge page size is architecture dependent.
hugetlb_free_vmemmap
When CONFIG_HUGETLB_PAGE_FREE_VMEMMAP is set, this enables freeing
unused vmemmap pages associated with each HugeTLB page.
When multiple huge page sizes are supported, ``/proc/sys/vm/nr_hugepages``
indicates the current number of pre-allocated huge pages of the default size.

13
Documentation/admin-guide/mm/memory-hotplug.rst
View File

@ -357,6 +357,19 @@ creates ZONE_MOVABLE as following.
Unfortunately, there is no information to show which memory block belongs
to ZONE_MOVABLE. This is TBD.
Memory offlining can fail when dissolving a free huge page on ZONE_MOVABLE
and the feature of freeing unused vmemmap pages associated with each hugetlb
page is enabled.
This can happen when we have plenty of ZONE_MOVABLE memory, but not enough
kernel memory to allocate vmemmmap pages. We may even be able to migrate
huge page contents, but will not be able to dissolve the source huge page.
This will prevent an offline operation and is unfortunate as memory offlining
is expected to succeed on movable zones. Users that depend on memory hotplug
to succeed for movable zones should carefully consider whether the memory
savings gained from this feature are worth the risk of possibly not being
able to offline memory in certain situations.
.. note::
Techniques that rely on long-term pinnings of memory (especially, RDMA and
vfio) are fundamentally problematic with ZONE_MOVABLE and, therefore, memory

2
Documentation/admin-guide/mm/pagemap.rst
View File

@ -21,6 +21,8 @@ There are four components to pagemap:
* Bit 55 pte is soft-dirty (see
:ref:`Documentation/admin-guide/mm/soft-dirty.rst <soft_dirty>`)
* Bit 56 page exclusively mapped (since 4.2)
* Bit 57 pte is uffd-wp write-protected (since 5.13) (see
:ref:`Documentation/admin-guide/mm/userfaultfd.rst <userfaultfd>`)
* Bits 57-60 zero
* Bit 61 page is file-page or shared-anon (since 3.5)
* Bit 62 page swapped

3
Documentation/admin-guide/mm/userfaultfd.rst
View File

@ -77,7 +77,8 @@ events, except page fault notifications, may be generated:
- ``UFFD_FEATURE_MINOR_HUGETLBFS`` indicates that the kernel supports
``UFFDIO_REGISTER_MODE_MINOR`` registration for hugetlbfs virtual memory
areas.
areas. ``UFFD_FEATURE_MINOR_SHMEM`` is the analogous feature indicating
support for shmem virtual memory areas.
The userland application should set the feature flags it intends to use
when invoking the ``UFFDIO_API`` ioctl, to request that those features be

7
Documentation/core-api/kernel-api.rst
View File

@ -24,11 +24,8 @@ String Conversions
.. kernel-doc:: lib/vsprintf.c
:export:
.. kernel-doc:: include/linux/kernel.h
:functions: kstrtol
.. kernel-doc:: include/linux/kernel.h
:functions: kstrtoul
.. kernel-doc:: include/linux/kstrtox.h
:functions: kstrtol kstrtoul
.. kernel-doc:: lib/kstrtox.c
:export:

48
Documentation/filesystems/proc.rst
View File

@ -933,8 +933,15 @@ meminfo
~~~~~~~
Provides information about distribution and utilization of memory. This
varies by architecture and compile options. The following is from a
16GB PIII, which has highmem enabled. You may not have all of these fields.
varies by architecture and compile options. Some of the counters reported
here overlap. The memory reported by the non overlapping counters may not
add up to the overall memory usage and the difference for some workloads
can be substantial. In many cases there are other means to find out
additional memory using subsystem specific interfaces, for instance
/proc/net/sockstat for TCP memory allocations.
The following is from a 16GB PIII, which has highmem enabled.
You may not have all of these fields.
::
@ -1913,18 +1920,20 @@ if precise results are needed.
3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
---------------------------------------------------------------
This file provides information associated with an opened file. The regular
files have at least three fields -- 'pos', 'flags' and 'mnt_id'. The 'pos'
represents the current offset of the opened file in decimal form [see lseek(2)
for details], 'flags' denotes the octal O_xxx mask the file has been
created with [see open(2) for details] and 'mnt_id' represents mount ID of
the file system containing the opened file [see 3.5 /proc/<pid>/mountinfo
for details].
files have at least four fields -- 'pos', 'flags', 'mnt_id' and 'ino'.
The 'pos' represents the current offset of the opened file in decimal
form [see lseek(2) for details], 'flags' denotes the octal O_xxx mask the
file has been created with [see open(2) for details] and 'mnt_id' represents
mount ID of the file system containing the opened file [see 3.5
/proc/<pid>/mountinfo for details]. 'ino' represents the inode number of
the file.
A typical output is::
pos: 0
flags: 0100002
mnt_id: 19
ino: 63107
All locks associated with a file descriptor are shown in its fdinfo too::
@ -1941,6 +1950,7 @@ Eventfd files
pos: 0
flags: 04002
mnt_id: 9
ino: 63107
eventfd-count: 5a
where 'eventfd-count' is hex value of a counter.
@ -1953,6 +1963,7 @@ Signalfd files
pos: 0
flags: 04002
mnt_id: 9
ino: 63107
sigmask: 0000000000000200
where 'sigmask' is hex value of the signal mask associated
@ -1966,6 +1977,7 @@ Epoll files
pos: 0
flags: 02
mnt_id: 9
ino: 63107
tfd: 5 events: 1d data: ffffffffffffffff pos:0 ino:61af sdev:7
where 'tfd' is a target file descriptor number in decimal form,
@ -1982,6 +1994,8 @@ For inotify files the format is the following::
pos: 0
flags: 02000000
mnt_id: 9
ino: 63107
inotify wd:3 ino:9e7e sdev:800013 mask:800afce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:7e9e0000640d1b6d
where 'wd' is a watch descriptor in decimal form, i.e. a target file
@ -2004,6 +2018,7 @@ For fanotify files the format is::
pos: 0
flags: 02
mnt_id: 9
ino: 63107
fanotify flags:10 event-flags:0
fanotify mnt_id:12 mflags:40 mask:38 ignored_mask:40000003
fanotify ino:4f969 sdev:800013 mflags:0 mask:3b ignored_mask:40000000 fhandle-bytes:8 fhandle-type:1 f_handle:69f90400c275b5b4
@ -2028,6 +2043,7 @@ Timerfd files
pos: 0
flags: 02
mnt_id: 9
ino: 63107
clockid: 0
ticks: 0
settime flags: 01
@ -2042,6 +2058,22 @@ details]. 'it_value' is remaining time until the timer expiration.
with TIMER_ABSTIME option which will be shown in 'settime flags', but 'it_value'
still exhibits timer's remaining time.
DMA Buffer files
~~~~~~~~~~~~~~~~
::
pos: 0
flags: 04002
mnt_id: 9
ino: 63107
size: 32768
count: 2
exp_name: system-heap
where 'size' is the size of the DMA buffer in bytes. 'count' is the file count of
the DMA buffer file. 'exp_name' is the name of the DMA buffer exporter.
3.9 /proc/<pid>/map_files - Information about memory mapped files
---------------------------------------------------------------------
This directory contains symbolic links which represent memory mapped files

19
Documentation/vm/hmm.rst
View File

@ -332,7 +332,7 @@ between device driver specific code and shared common code:
walks to fill in the ``args->src`` array with PFNs to be migrated.
The ``invalidate_range_start()`` callback is passed a
``struct mmu_notifier_range`` with the ``event`` field set to
``MMU_NOTIFY_MIGRATE`` and the ``migrate_pgmap_owner`` field set to
``MMU_NOTIFY_MIGRATE`` and the ``owner`` field set to
the ``args->pgmap_owner`` field passed to migrate_vma_setup(). This is
allows the device driver to skip the invalidation callback and only
invalidate device private MMU mappings that are actually migrating.
@ -405,6 +405,23 @@ between device driver specific code and shared common code:
The lock can now be released.
Exclusive access memory
=======================
Some devices have features such as atomic PTE bits that can be used to implement
atomic access to system memory. To support atomic operations to a shared virtual
memory page such a device needs access to that page which is exclusive of any
userspace access from the CPU. The ``make_device_exclusive_range()`` function
can be used to make a memory range inaccessible from userspace.
This replaces all mappings for pages in the given range with special swap
entries. Any attempt to access the swap entry results in a fault which is
resovled by replacing the entry with the original mapping. A driver gets
notified that the mapping has been changed by MMU notifiers, after which point
it will no longer have exclusive access to the page. Exclusive access is
guranteed to last until the driver drops the page lock and page reference, at
which point any CPU faults on the page may proceed as described.
Memory cgroup (memcg) and rss accounting
========================================

33
Documentation/vm/unevictable-lru.rst
View File

@ -389,14 +389,14 @@ mlocked, munlock_vma_page() updates that zone statistics for the number of
mlocked pages. Note, however, that at this point we haven't checked whether
the page is mapped by other VM_LOCKED VMAs.
We can't call try_to_munlock(), the function that walks the reverse map to
We can't call page_mlock(), the function that walks the reverse map to
check for other VM_LOCKED VMAs, without first isolating the page from the LRU.
try_to_munlock() is a variant of try_to_unmap() and thus requires that the page
page_mlock() is a variant of try_to_unmap() and thus requires that the page
not be on an LRU list [more on these below]. However, the call to
isolate_lru_page() could fail, in which case we couldn't try_to_munlock(). So,
isolate_lru_page() could fail, in which case we can't call page_mlock(). So,
we go ahead and clear PG_mlocked up front, as this might be the only chance we
have. If we can successfully isolate the page, we go ahead and
try_to_munlock(), which will restore the PG_mlocked flag and update the zone
have. If we can successfully isolate the page, we go ahead and call
page_mlock(), which will restore the PG_mlocked flag and update the zone
page statistics if it finds another VMA holding the page mlocked. If we fail
to isolate the page, we'll have left a potentially mlocked page on the LRU.
This is fine, because we'll catch it later if and if vmscan tries to reclaim
@ -545,31 +545,24 @@ munlock or munmap system calls, mm teardown (munlock_vma_pages_all), reclaim,
holepunching, and truncation of file pages and their anonymous COWed pages.
try_to_munlock() Reverse Map Scan
page_mlock() Reverse Map Scan
---------------------------------
.. warning::
[!] TODO/FIXME: a better name might be page_mlocked() - analogous to the
page_referenced() reverse map walker.
When munlock_vma_page() [see section :ref:`munlock()/munlockall() System Call
Handling <munlock_munlockall_handling>` above] tries to munlock a
page, it needs to determine whether or not the page is mapped by any
VM_LOCKED VMA without actually attempting to unmap all PTEs from the
page. For this purpose, the unevictable/mlock infrastructure
introduced a variant of try_to_unmap() called try_to_munlock().
introduced a variant of try_to_unmap() called page_mlock().
try_to_munlock() calls the same functions as try_to_unmap() for anonymous and
mapped file and KSM pages with a flag argument specifying unlock versus unmap
processing. Again, these functions walk the respective reverse maps looking
for VM_LOCKED VMAs. When such a VMA is found, as in the try_to_unmap() case,
the functions mlock the page via mlock_vma_page() and return SWAP_MLOCK. This
undoes the pre-clearing of the page's PG_mlocked done by munlock_vma_page.
page_mlock() walks the respective reverse maps looking for VM_LOCKED VMAs. When
such a VMA is found the page is mlocked via mlock_vma_page(). This undoes the
pre-clearing of the page's PG_mlocked done by munlock_vma_page.
Note that try_to_munlock()'s reverse map walk must visit every VMA in a page's
Note that page_mlock()'s reverse map walk must visit every VMA in a page's
reverse map to determine that a page is NOT mapped into any VM_LOCKED VMA.
However, the scan can terminate when it encounters a VM_LOCKED VMA.
Although try_to_munlock() might be called a great many times when munlocking a
Although page_mlock() might be called a great many times when munlocking a
large region or tearing down a large address space that has been mlocked via
mlockall(), overall this is a fairly rare event.
@ -602,7 +595,7 @@ inactive lists to the appropriate node's unevictable list.
shrink_inactive_list() should only see SHM_LOCK'd pages that became SHM_LOCK'd
after shrink_active_list() had moved them to the inactive list, or pages mapped
into VM_LOCKED VMAs that munlock_vma_page() couldn't isolate from the LRU to
recheck via try_to_munlock(). shrink_inactive_list() won't notice the latter,
recheck via page_mlock(). shrink_inactive_list() won't notice the latter,
but will pass on to shrink_page_list().
shrink_page_list() again culls obviously unevictable pages that it could

10
MAINTAINERS
View File

@ -7704,6 +7704,14 @@ L: linux-input@vger.kernel.org
S: Maintained
F: drivers/input/touchscreen/resistive-adc-touch.c
GENERIC STRING LIBRARY
R: Andy Shevchenko <andy@kernel.org>
S: Maintained
F: lib/string.c
F: lib/string_helpers.c
F: lib/test_string.c
F: lib/test-string_helpers.c
GENERIC UIO DRIVER FOR PCI DEVICES
M: "Michael S. Tsirkin" <mst@redhat.com>
L: kvm@vger.kernel.org
@ -11900,6 +11908,7 @@ F: include/linux/mmzone.h
F: include/linux/pagewalk.h
F: include/linux/vmalloc.h
F: mm/
F: tools/testing/selftests/vm/
MEMORY TECHNOLOGY DEVICES (MTD)
M: Miquel Raynal <miquel.raynal@bootlin.com>
@ -20307,7 +20316,6 @@ M: Seth Jennings <sjenning@redhat.com>
M: Dan Streetman <ddstreet@ieee.org>
L: linux-mm@kvack.org
S: Maintained
F: include/linux/zbud.h
F: mm/zbud.c
ZD1211RW WIRELESS DRIVER

5
arch/alpha/Kconfig
View File

@ -40,6 +40,7 @@ config ALPHA
select MMU_GATHER_NO_RANGE
select SET_FS
select SPARSEMEM_EXTREME if SPARSEMEM
select ZONE_DMA
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
@ -65,10 +66,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config ZONE_DMA
bool
default y
config GENERIC_ISA_DMA
bool
default y

1
arch/alpha/include/asm/pgalloc.h
View File

@ -18,7 +18,6 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
{
pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)

1
arch/alpha/include/asm/pgtable.h
View File

@ -46,7 +46,6 @@ struct vm_area_struct;
#define PTRS_PER_PMD (1UL << (PAGE_SHIFT-3))
#define PTRS_PER_PGD (1UL << (PAGE_SHIFT-3))
#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
/* Number of pointers that fit on a page: this will go away. */
#define PTRS_PER_PAGE (1UL << (PAGE_SHIFT-3))

3
arch/alpha/include/uapi/asm/mman.h
View File

@ -71,6 +71,9 @@
#define MADV_COLD 20 /* deactivate these pages */
#define MADV_PAGEOUT 21 /* reclaim these pages */
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
/* compatibility flags */
#define MAP_FILE 0

2
arch/alpha/kernel/setup.c
View File

@ -28,6 +28,7 @@
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/panic_notifier.h>
#include <linux/platform_device.h>
#include <linux/memblock.h>
#include <linux/pci.h>
@ -46,7 +47,6 @@
#include <linux/log2.h>
#include <linux/export.h>
extern struct atomic_notifier_head panic_notifier_list;
static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
static struct notifier_block alpha_panic_block = {
alpha_panic_event,

2
arch/arc/include/asm/pgalloc.h
View File

@ -129,6 +129,4 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t ptep)
#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
#define pmd_pgtable(pmd) ((pgtable_t) pmd_page_vaddr(pmd))
#endif /* _ASM_ARC_PGALLOC_H */

8
arch/arc/include/asm/pgtable.h
View File

@ -222,12 +222,6 @@
*/
#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE)
/*
* No special requirements for lowest virtual address we permit any user space
* mapping to be mapped at.
*/
#define FIRST_USER_ADDRESS 0UL
/****************************************************************
* Bucket load of VM Helpers
@ -356,6 +350,8 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
#define kern_addr_valid(addr) (1)
#define pmd_pgtable(pmd) ((pgtable_t) pmd_page_vaddr(pmd))
/*
* remap a physical page `pfn' of size `size' with page protection `prot'
* into virtual address `from'

3
arch/arm/Kconfig
View File

@ -218,9 +218,6 @@ config GENERIC_CALIBRATE_DELAY
config ARCH_MAY_HAVE_PC_FDC
bool
config ZONE_DMA
bool
config ARCH_SUPPORTS_UPROBES
def_bool y

1
arch/arm/include/asm/pgalloc.h
View File

@ -143,7 +143,6 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
__pmd_populate(pmdp, page_to_phys(ptep), prot);
}
#define pmd_pgtable(pmd) pmd_page(pmd)
#endif /* CONFIG_MMU */

13
arch/arm64/Kconfig
View File

@ -42,6 +42,7 @@ config ARM64
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_ZONE_DMA_SET if EXPERT
select ARCH_HAVE_ELF_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK if !PREEMPTION
@ -155,7 +156,6 @@ config ARM64
select HAVE_ARCH_KGDB
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_PFN_VALID
select HAVE_ARCH_PREL32_RELOCATIONS
select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
select HAVE_ARCH_SECCOMP_FILTER
@ -308,14 +308,6 @@ config GENERIC_CSUM
config GENERIC_CALIBRATE_DELAY
def_bool y
config ZONE_DMA
bool "Support DMA zone" if EXPERT
default y
config ZONE_DMA32
bool "Support DMA32 zone" if EXPERT
default y
config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
def_bool y
@ -1053,9 +1045,6 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
def_bool y
depends on NUMA
config HOLES_IN_ZONE
def_bool y
source "kernel/Kconfig.hz"
config ARCH_SPARSEMEM_ENABLE

3
arch/arm64/include/asm/hugetlb.h
View File

@ -23,8 +23,7 @@ static inline void arch_clear_hugepage_flags(struct page *page)
}
#define arch_clear_hugepage_flags arch_clear_hugepage_flags
extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
struct page *page, int writable);
pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
#define arch_make_huge_pte arch_make_huge_pte
#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,

2
arch/arm64/include/asm/memory.h
View File

@ -351,7 +351,7 @@ static inline void *phys_to_virt(phys_addr_t x)
#define virt_addr_valid(addr) ({ \
__typeof__(addr) __addr = __tag_reset(addr); \
__is_lm_address(__addr) && pfn_valid(virt_to_pfn(__addr)); \
__is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr)); \
})
void dump_mem_limit(void);

2
arch/arm64/include/asm/page.h
View File

@ -41,7 +41,7 @@ void tag_clear_highpage(struct page *to);
typedef struct page *pgtable_t;
extern int pfn_valid(unsigned long);
int pfn_is_map_memory(unsigned long pfn);
#include <asm/memory.h>

1
arch/arm64/include/asm/pgalloc.h
View File

@ -86,6 +86,5 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
VM_BUG_ON(mm == &init_mm);
__pmd_populate(pmdp, page_to_phys(ptep), PMD_TYPE_TABLE | PMD_TABLE_PXN);
}
#define pmd_pgtable(pmd) pmd_page(pmd)
#endif

2
arch/arm64/include/asm/pgtable.h
View File

@ -26,8 +26,6 @@
#define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT))
#define FIRST_USER_ADDRESS 0UL
#ifndef __ASSEMBLY__
#include <asm/cmpxchg.h>

1
arch/arm64/kernel/setup.c
View File

@ -23,6 +23,7 @@
#include <linux/interrupt.h>
#include <linux/smp.h>
#include <linux/fs.h>
#include <linux/panic_notifier.h>
#include <linux/proc_fs.h>
#include <linux/memblock.h>
#include <linux/of_fdt.h>

2
arch/arm64/kvm/mmu.c
View File

@ -85,7 +85,7 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
static bool kvm_is_device_pfn(unsigned long pfn)
{
return !pfn_valid(pfn);
return !pfn_is_map_memory(pfn);
}
static void *stage2_memcache_zalloc_page(void *arg)

5
arch/arm64/mm/hugetlbpage.c
View File

@ -339,10 +339,9 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
return NULL;
}
pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
struct page *page, int writable)
pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags)
{
size_t pagesize = huge_page_size(hstate_vma(vma));
size_t pagesize = 1UL << shift;
if (pagesize == CONT_PTE_SIZE) {
entry = pte_mkcont(entry);

31
arch/arm64/mm/init.c
View File

@ -219,42 +219,17 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
free_area_init(max_zone_pfns);
}
int pfn_valid(unsigned long pfn)
int pfn_is_map_memory(unsigned long pfn)
{
phys_addr_t addr = PFN_PHYS(pfn);
struct mem_section *ms;
/*
* Ensure the upper PAGE_SHIFT bits are clear in the
* pfn. Else it might lead to false positives when
* some of the upper bits are set, but the lower bits
* match a valid pfn.
*/
/* avoid false positives for bogus PFNs, see comment in pfn_valid() */
if (PHYS_PFN(addr) != pfn)
return 0;
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
ms = __pfn_to_section(pfn);
if (!valid_section(ms))
return 0;
/*
* ZONE_DEVICE memory does not have the memblock entries.
* memblock_is_map_memory() check for ZONE_DEVICE based
* addresses will always fail. Even the normal hotplugged
* memory will never have MEMBLOCK_NOMAP flag set in their
* memblock entries. Skip memblock search for all non early
* memory sections covering all of hotplug memory including
* both normal and ZONE_DEVICE based.
*/
if (!early_section(ms))
return pfn_section_valid(ms, pfn);
return memblock_is_map_memory(addr);
}
EXPORT_SYMBOL(pfn_valid);
EXPORT_SYMBOL(pfn_is_map_memory);
static phys_addr_t memory_limit = PHYS_ADDR_MAX;

4
arch/arm64/mm/ioremap.c
View File

@ -43,7 +43,7 @@ static void __iomem *__ioremap_caller(phys_addr_t phys_addr, size_t size,
/*
* Don't allow RAM to be mapped.
*/
if (WARN_ON(pfn_valid(__phys_to_pfn(phys_addr))))
if (WARN_ON(pfn_is_map_memory(__phys_to_pfn(phys_addr))))
return NULL;
area = get_vm_area_caller(size, VM_IOREMAP, caller);
@ -84,7 +84,7 @@ EXPORT_SYMBOL(iounmap);
void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size)
{
/* For normal memory we already have a cacheable mapping. */
if (pfn_valid(__phys_to_pfn(phys_addr)))
if (pfn_is_map_memory(__phys_to_pfn(phys_addr)))
return (void __iomem *)__phys_to_virt(phys_addr);
return __ioremap_caller(phys_addr, size, __pgprot(PROT_NORMAL),

22
arch/arm64/mm/mmu.c
View File

@ -82,7 +82,7 @@ void set_swapper_pgd(pgd_t *pgdp, pgd_t pgd)
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot)
{
if (!pfn_valid(pfn))
if (!pfn_is_map_memory(pfn))
return pgprot_noncached(vma_prot);
else if (file->f_flags & O_SYNC)
return pgprot_writecombine(vma_prot);
@ -1339,6 +1339,7 @@ void *__init fixmap_remap_fdt(phys_addr_t dt_phys, int *size, pgprot_t prot)
return dt_virt;
}
#if CONFIG_PGTABLE_LEVELS > 3
int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot)
{
pud_t new_pud = pfn_pud(__phys_to_pfn(phys), mk_pud_sect_prot(prot));
@ -1353,6 +1354,16 @@ int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot)
return 1;
}
int pud_clear_huge(pud_t *pudp)
{
if (!pud_sect(READ_ONCE(*pudp)))
return 0;
pud_clear(pudp);
return 1;
}
#endif
#if CONFIG_PGTABLE_LEVELS > 2
int pmd_set_huge(pmd_t *pmdp, phys_addr_t phys, pgprot_t prot)
{
pmd_t new_pmd = pfn_pmd(__phys_to_pfn(phys), mk_pmd_sect_prot(prot));
@ -1367,14 +1378,6 @@ int pmd_set_huge(pmd_t *pmdp, phys_addr_t phys, pgprot_t prot)
return 1;
}
int pud_clear_huge(pud_t *pudp)
{
if (!pud_sect(READ_ONCE(*pudp)))
return 0;
pud_clear(pudp);
return 1;
}
int pmd_clear_huge(pmd_t *pmdp)
{
if (!pmd_sect(READ_ONCE(*pmdp)))
@ -1382,6 +1385,7 @@ int pmd_clear_huge(pmd_t *pmdp)
pmd_clear(pmdp);
return 1;
}
#endif
int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr)
{

2
arch/csky/include/asm/pgalloc.h
View File

@ -22,8 +22,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
set_pmd(pmd, __pmd(__pa(page_address(pte))));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
extern void pgd_init(unsigned long *p);
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)

1
arch/csky/include/asm/pgtable.h
View File

@ -14,7 +14,6 @@
#define PGDIR_MASK (~(PGDIR_SIZE-1))
#define USER_PTRS_PER_PGD (PAGE_OFFSET/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
/*
* C-SKY is two-level paging structure:

4
arch/hexagon/include/asm/pgtable.h
View File

@ -155,9 +155,6 @@ extern unsigned long _dflt_cache_att;
extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; /* located in head.S */
/* Seems to be zero even in architectures where the zero page is firewalled? */
#define FIRST_USER_ADDRESS 0UL
/* HUGETLB not working currently */
#ifdef CONFIG_HUGETLB_PAGE
#define pte_mkhuge(pte) __pte((pte_val(pte) & ~0x3) | HVM_HUGEPAGE_SIZE)
@ -242,7 +239,6 @@ static inline int pmd_bad(pmd_t pmd)
* pmd_page - converts a PMD entry to a page pointer
*/
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
#define pmd_pgtable(pmd) pmd_page(pmd)
/**
* pte_none - check if pte is mapped

7
arch/ia64/Kconfig
View File

@ -60,6 +60,7 @@ config IA64
select NUMA if !FLATMEM
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
select SET_FS
select ZONE_DMA32
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
@ -72,9 +73,6 @@ config 64BIT
select ATA_NONSTANDARD if ATA
default y
config ZONE_DMA32
def_bool y
config MMU
bool
default y
@ -308,9 +306,6 @@ config NODES_SHIFT
MAX_NUMNODES will be 2^(This value).
If in doubt, use the default.
config HOLES_IN_ZONE
bool
config HAVE_ARCH_NODEDATA_EXTENSION
def_bool y
depends on NUMA

1
arch/ia64/include/asm/pal.h
View File

@ -99,6 +99,7 @@
#include <linux/types.h>
#include <asm/fpu.h>
#include <asm/intrinsics.h>
/*
* Data types needed to pass information into PAL procedures and

1
arch/ia64/include/asm/pgalloc.h
View File

@ -52,7 +52,6 @@ pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
{
pmd_val(*pmd_entry) = page_to_phys(pte);
}
#define pmd_pgtable(pmd) pmd_page(pmd)
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)

1
arch/ia64/include/asm/pgtable.h
View File

@ -128,7 +128,6 @@
#define PTRS_PER_PGD_SHIFT PTRS_PER_PTD_SHIFT
#define PTRS_PER_PGD (1UL << PTRS_PER_PGD_SHIFT)
#define USER_PTRS_PER_PGD (5*PTRS_PER_PGD/8) /* regions 0-4 are user regions */
#define FIRST_USER_ADDRESS 0UL
/*
* All the normal masks have the "page accessed" bits on, as any time

5
arch/m68k/Kconfig
View File

@ -34,6 +34,7 @@ config M68K
select SET_FS
select UACCESS_MEMCPY if !MMU
select VIRT_TO_BUS
select ZONE_DMA
config CPU_BIG_ENDIAN
def_bool y
@ -62,10 +63,6 @@ config TIME_LOW_RES
config NO_IOPORT_MAP
def_bool y
config ZONE_DMA
bool
default y
config HZ
int
default 1000 if CLEOPATRA

2
arch/m68k/include/asm/mcf_pgalloc.h
View File

@ -32,8 +32,6 @@ extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
#define pmd_populate_kernel pmd_populate
#define pmd_pgtable(pmd) pfn_to_virt(pmd_val(pmd) >> PAGE_SHIFT)
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
unsigned long address)
{

2
arch/m68k/include/asm/mcf_pgtable.h
View File

@ -150,6 +150,8 @@
#ifndef __ASSEMBLY__
#define pmd_pgtable(pmd) pfn_to_virt(pmd_val(pmd) >> PAGE_SHIFT)
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.

1
arch/m68k/include/asm/motorola_pgalloc.h
View File

@ -88,7 +88,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page
{
pmd_set(pmd, page);
}
#define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{

2
arch/m68k/include/asm/motorola_pgtable.h
View File

@ -105,6 +105,8 @@ extern unsigned long mm_cachebits;
#define __S110 PAGE_SHARED_C
#define __S111 PAGE_SHARED_C
#define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.

1
arch/m68k/include/asm/pgtable_mm.h
View File

@ -72,7 +72,6 @@
#define PTRS_PER_PGD 128
#endif
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
/* Virtual address region for use by kernel_map() */
#ifdef CONFIG_SUN3

1
arch/m68k/include/asm/sun3_pgalloc.h
View File

@ -32,7 +32,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page
{
pmd_val(*pmd) = __pa((unsigned long)page_address(page));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is

4
arch/microblaze/Kconfig
View File

@ -43,6 +43,7 @@ config MICROBLAZE
select MMU_GATHER_NO_RANGE
select SPARSE_IRQ
select SET_FS
select ZONE_DMA
# Endianness selection
choice
@ -60,9 +61,6 @@ config CPU_LITTLE_ENDIAN
endchoice
config ZONE_DMA
def_bool y
config ARCH_HAS_ILOG2_U32
def_bool n

2
arch/microblaze/include/asm/pgalloc.h
View File

@ -28,8 +28,6 @@ static inline pgd_t *get_pgd(void)
#define pgd_alloc(mm) get_pgd()
#define pmd_pgtable(pmd) pmd_page(pmd)
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))

2
arch/microblaze/include/asm/pgtable.h
View File

@ -25,8 +25,6 @@ extern int mem_init_done;
#include <asm/mmu.h>
#include <asm/page.h>
#define FIRST_USER_ADDRESS 0UL
extern unsigned long va_to_phys(unsigned long address);
extern pte_t *va_to_pte(unsigned long address);

7
arch/mips/Kconfig
View File

@ -3274,13 +3274,6 @@ config I8253
select CLKSRC_I8253
select CLKEVT_I8253
select MIPS_EXTERNAL_TIMER
config ZONE_DMA
bool
config ZONE_DMA32
bool
endmenu
config TRAD_SIGNALS

1
arch/mips/include/asm/pgalloc.h
View File

@ -28,7 +28,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
{
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* Initialize a new pmd table with invalid pointers.

1
arch/mips/include/asm/pgtable-32.h
View File

@ -93,7 +93,6 @@ extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
#endif
#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
#define VMALLOC_START MAP_BASE

1
arch/mips/include/asm/pgtable-64.h
View File

@ -137,7 +137,6 @@
#define PTRS_PER_PTE ((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
#define USER_PTRS_PER_PGD ((TASK_SIZE64 / PGDIR_SIZE)?(TASK_SIZE64 / PGDIR_SIZE):1)
#define FIRST_USER_ADDRESS 0UL
/*
* TLB refill handlers also map the vmalloc area into xuseg. Avoid

3
arch/mips/include/uapi/asm/mman.h
View File

@ -98,6 +98,9 @@
#define MADV_COLD 20 /* deactivate these pages */
#define MADV_PAGEOUT 21 /* reclaim these pages */
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
/* compatibility flags */
#define MAP_FILE 0

1
arch/mips/kernel/relocate.c
View File

@ -18,6 +18,7 @@
#include <linux/kernel.h>
#include <linux/libfdt.h>
#include <linux/of_fdt.h>
#include <linux/panic_notifier.h>
#include <linux/sched/task.h>
#include <linux/start_kernel.h>
#include <linux/string.h>

1
arch/mips/sgi-ip22/ip22-reset.c
View File

@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/sched/signal.h>
#include <linux/notifier.h>
#include <linux/panic_notifier.h>
#include <linux/pm.h>
#include <linux/timer.h>

1
arch/mips/sgi-ip32/ip32-reset.c
View File

@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/panic_notifier.h>
#include <linux/sched.h>
#include <linux/sched/signal.h>
#include <linux/notifier.h>

5
arch/nds32/include/asm/pgalloc.h
View File

@ -12,11 +12,6 @@
#define __HAVE_ARCH_PTE_ALLOC_ONE
#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
/*
* Since we have only two-level page tables, these are trivial
*/
#define pmd_pgtable(pmd) pmd_page(pmd)
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t * pgd);

1
arch/nios2/include/asm/pgalloc.h
View File

@ -25,7 +25,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
{
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* Initialize a new pmd table with invalid pointers.

2
arch/nios2/include/asm/pgtable.h
View File

@ -24,8 +24,6 @@
#include <asm/pgtable-bits.h>
#include <asm-generic/pgtable-nopmd.h>
#define FIRST_USER_ADDRESS 0UL
#define VMALLOC_START CONFIG_NIOS2_KERNEL_MMU_REGION_BASE
#define VMALLOC_END (CONFIG_NIOS2_KERNEL_REGION_BASE - 1)

2
arch/openrisc/include/asm/pgalloc.h
View File

@ -72,6 +72,4 @@ do { \
tlb_remove_page((tlb), (pte)); \
} while (0)
#define pmd_pgtable(pmd) pmd_page(pmd)
#endif

1
arch/openrisc/include/asm/pgtable.h
View File

@ -73,7 +73,6 @@ extern void paging_init(void);
*/
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
/*
* Kernels own virtual memory area.

1
arch/parisc/include/asm/pgalloc.h
View File

@ -69,6 +69,5 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
#define pmd_populate(mm, pmd, pte_page) \
pmd_populate_kernel(mm, pmd, page_address(pte_page))
#define pmd_pgtable(pmd) pmd_page(pmd)
#endif

2
arch/parisc/include/asm/pgtable.h
View File

@ -171,8 +171,6 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
* pgd entries used up by user/kernel:
*/
#define FIRST_USER_ADDRESS 0UL
/* NB: The tlb miss handlers make certain assumptions about the order */
/* of the following bits, so be careful (One example, bits 25-31 */
/* are moved together in one instruction). */

3
arch/parisc/include/uapi/asm/mman.h
View File

@ -52,6 +52,9 @@
#define MADV_COLD 20 /* deactivate these pages */
#define MADV_PAGEOUT 21 /* reclaim these pages */
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
#define MADV_MERGEABLE 65 /* KSM may merge identical pages */
#define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */

1
arch/parisc/kernel/pdc_chassis.c
View File

@ -20,6 +20,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/panic_notifier.h>
#include <linux/reboot.h>
#include <linux/notifier.h>
#include <linux/cache.h>

6
arch/powerpc/Kconfig
View File

@ -187,7 +187,7 @@ config PPC
select GENERIC_VDSO_TIME_NS
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_HUGE_VMAP if PPC_BOOK3S_64 && PPC_RADIX_MMU
select HAVE_ARCH_HUGE_VMAP if PPC_RADIX_MMU || PPC_8xx
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14
@ -403,10 +403,6 @@ config PPC_ADV_DEBUG_DAC_RANGE
config PPC_DAWR
bool
config ZONE_DMA
bool
default y if PPC_BOOK3E_64
config PGTABLE_LEVELS
int
default 2 if !PPC64

1
arch/powerpc/include/asm/book3s/pgtable.h
View File

@ -8,7 +8,6 @@
#include <asm/book3s/32/pgtable.h>
#endif
#define FIRST_USER_ADDRESS 0UL
#ifndef __ASSEMBLY__
/* Insert a PTE, top-level function is out of line. It uses an inline
* low level function in the respective pgtable-* files

5
arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h
View File

@ -66,10 +66,9 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
}
#ifdef CONFIG_PPC_4K_PAGES
static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
struct page *page, int writable)
static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags)
{
size_t size = huge_page_size(hstate_vma(vma));
size_t size = 1UL << shift;
if (size == SZ_16K)
return __pte(pte_val(entry) & ~_PAGE_HUGE);

43
arch/powerpc/include/asm/nohash/32/mmu-8xx.h
View File

@ -178,6 +178,7 @@
#ifndef __ASSEMBLY__
#include <linux/mmdebug.h>
#include <linux/sizes.h>
void mmu_pin_tlb(unsigned long top, bool readonly);
@ -225,6 +226,48 @@ static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize)
BUG();
}
static inline bool arch_vmap_try_size(unsigned long addr, unsigned long end, u64 pfn,
unsigned int max_page_shift, unsigned long size)
{
if (end - addr < size)
return false;
if ((1UL << max_page_shift) < size)
return false;
if (!IS_ALIGNED(addr, size))
return false;
if (!IS_ALIGNED(PFN_PHYS(pfn), size))
return false;
return true;
}
static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, unsigned long end,
u64 pfn, unsigned int max_page_shift)
{
if (arch_vmap_try_size(addr, end, pfn, max_page_shift, SZ_512K))
return SZ_512K;
if (PAGE_SIZE == SZ_16K)
return SZ_16K;
if (arch_vmap_try_size(addr, end, pfn, max_page_shift, SZ_16K))
return SZ_16K;
return PAGE_SIZE;
}
#define arch_vmap_pte_range_map_size arch_vmap_pte_range_map_size
static inline int arch_vmap_pte_supported_shift(unsigned long size)
{
if (size >= SZ_512K)
return 19;
else if (size >= SZ_16K)
return 14;
else
return PAGE_SHIFT;
}
#define arch_vmap_pte_supported_shift arch_vmap_pte_supported_shift
/* patch sites */
extern s32 patch__itlbmiss_exit_1, patch__dtlbmiss_exit_1;
extern s32 patch__itlbmiss_perf, patch__dtlbmiss_perf;

1
arch/powerpc/include/asm/nohash/32/pgtable.h
View File

@ -54,7 +54,6 @@ extern int icache_44x_need_flush;
#define PGD_MASKED_BITS 0
#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
#define pte_ERROR(e) \
pr_err("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \

2
arch/powerpc/include/asm/nohash/64/pgtable.h
View File

@ -12,8 +12,6 @@
#include <asm/barrier.h>
#include <asm/asm-const.h>
#define FIRST_USER_ADDRESS 0UL
/*
* Size of EA range mapped by our pagetables.
*/

5
arch/powerpc/include/asm/pgalloc.h
View File

@ -70,9 +70,4 @@ extern struct kmem_cache *pgtable_cache[];
#include <asm/nohash/pgalloc.h>
#endif
static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
return (pgtable_t)pmd_page_vaddr(pmd);
}
#endif /* _ASM_POWERPC_PGALLOC_H */

6
arch/powerpc/include/asm/pgtable.h
View File

@ -152,6 +152,12 @@ static inline bool p4d_is_leaf(p4d_t p4d)
}
#endif
#define pmd_pgtable pmd_pgtable
static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
return (pgtable_t)pmd_page_vaddr(pmd);
}
#ifdef CONFIG_PPC64
#define is_ioremap_addr is_ioremap_addr
static inline bool is_ioremap_addr(const void *x)

1
arch/powerpc/kernel/setup-common.c
View File

@ -9,6 +9,7 @@
#undef DEBUG
#include <linux/export.h>
#include <linux/panic_notifier.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/init.h>

1
arch/powerpc/platforms/Kconfig.cputype
View File

@ -111,6 +111,7 @@ config PPC_BOOK3E_64
select PPC_FPU # Make it a choice ?
select PPC_SMP_MUXED_IPI
select PPC_DOORBELL
select ZONE_DMA
endchoice

5
arch/riscv/Kconfig
View File

@ -104,6 +104,7 @@ config RISCV
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
select UACCESS_MEMCPY if !MMU
select ZONE_DMA32 if 64BIT
config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
@ -133,10 +134,6 @@ config MMU
Select if you want MMU-based virtualised addressing space
support by paged memory management. If unsure, say 'Y'.
config ZONE_DMA32
bool
default y if 64BIT
config VA_BITS
int
default 32 if 32BIT

2
arch/riscv/include/asm/pgalloc.h
View File

@ -38,8 +38,6 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
}
#endif /* __PAGETABLE_PMD_FOLDED */
#define pmd_pgtable(pmd) pmd_page(pmd)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *pgd;

2
arch/riscv/include/asm/pgtable.h
View File

@ -536,8 +536,6 @@ void setup_bootmem(void);
void paging_init(void);
void misc_mem_init(void);
#define FIRST_USER_ADDRESS 0
/*
* ZERO_PAGE is a global shared page that is always zero,
* used for zero-mapped memory areas, etc.

6
arch/s390/Kconfig
View File

@ -2,9 +2,6 @@
config MMU
def_bool y
config ZONE_DMA
def_bool y
config CPU_BIG_ENDIAN
def_bool y
@ -62,7 +59,7 @@ config S390
select ARCH_BINFMT_ELF_STATE
select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_ENABLE_SPLIT_PMD_PTLOCK
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED
@ -211,6 +208,7 @@ config S390
select THREAD_INFO_IN_TASK
select TTY
select VIRT_CPU_ACCOUNTING
select ZONE_DMA
# Note: keep the above list sorted alphabetically
config SCHED_OMIT_FRAME_POINTER

3
arch/s390/include/asm/pgalloc.h
View File

@ -134,9 +134,6 @@ static inline void pmd_populate(struct mm_struct *mm,
#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)
#define pmd_pgtable(pmd) \
((pgtable_t)__va(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE))
/*
* page table entry allocation/free routines.
*/

5
arch/s390/include/asm/pgtable.h
View File

@ -65,8 +65,6 @@ extern unsigned long zero_page_mask;
/* TODO: s390 cannot support io_remap_pfn_range... */
#define FIRST_USER_ADDRESS 0UL
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p.\n", __FILE__, __LINE__, (void *) pte_val(e))
#define pmd_ERROR(e) \
@ -1711,4 +1709,7 @@ extern void s390_reset_cmma(struct mm_struct *mm);
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
#define pmd_pgtable(pmd) \
((pgtable_t)__va(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE))
#endif /* _S390_PAGE_H */

1
arch/s390/kernel/ipl.c
View File

@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/panic_notifier.h>
#include <linux/reboot.h>
#include <linux/ctype.h>
#include <linux/fs.h>

5
arch/s390/kernel/kprobes.c
View File

@ -44,11 +44,6 @@ void *alloc_insn_page(void)
return page;
}
void free_insn_page(void *page)
{
module_memfree(page);
}
static void *alloc_s390_insn_page(void)
{
if (xchg(&insn_page_in_use, 1) == 1)

2
arch/s390/mm/pgtable.c
View File

@ -691,7 +691,7 @@ static void ptep_zap_swap_entry(struct mm_struct *mm, swp_entry_t entry)
if (!non_swap_entry(entry))
dec_mm_counter(mm, MM_SWAPENTS);
else if (is_migration_entry(entry)) {
struct page *page = migration_entry_to_page(entry);
struct page *page = pfn_swap_entry_to_page(entry);
dec_mm_counter(mm, mm_counter(page));
}

1
arch/sh/include/asm/pgalloc.h
View File

@ -30,7 +30,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
{
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
#define __pte_free_tlb(tlb,pte,addr) \
do { \

2
arch/sh/include/asm/pgtable.h
View File

@ -59,8 +59,6 @@ static inline unsigned long long neff_sign_extend(unsigned long val)
/* Entries per level */
#define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE))
#define FIRST_USER_ADDRESS 0UL
#define PHYS_ADDR_MASK29 0x1fffffff
#define PHYS_ADDR_MASK32 0xffffffff

5
arch/sparc/Kconfig
View File

@ -59,6 +59,7 @@ config SPARC32
select CLZ_TAB
select HAVE_UID16
select OLD_SIGACTION
select ZONE_DMA
config SPARC64
def_bool 64BIT
@ -141,10 +142,6 @@ config HIGHMEM
default y if SPARC32
select KMAP_LOCAL
config ZONE_DMA
bool
default y if SPARC32
config GENERIC_ISA_DMA
bool
default y if SPARC32

1
arch/sparc/include/asm/pgalloc_32.h
View File

@ -51,7 +51,6 @@ static inline void free_pmd_fast(pmd_t * pmd)
#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
#define pmd_populate(mm, pmd, pte) pmd_set(pmd, pte)
#define pmd_pgtable(pmd) (pgtable_t)__pmd_page(pmd)
void pmd_set(pmd_t *pmdp, pte_t *ptep);
#define pmd_populate_kernel pmd_populate

1
arch/sparc/include/asm/pgalloc_64.h
View File

@ -67,7 +67,6 @@ void pte_free(struct mm_struct *mm, pgtable_t ptepage);
#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
#define pmd_pgtable(PMD) ((pte_t *)pmd_page_vaddr(PMD))
void pgtable_free(void *table, bool is_page);

3
arch/sparc/include/asm/pgtable_32.h
View File

@ -48,7 +48,6 @@ unsigned long __init bootmem_init(unsigned long *pages_avail);
#define PTRS_PER_PMD 64
#define PTRS_PER_PGD 256
#define USER_PTRS_PER_PGD PAGE_OFFSET / PGDIR_SIZE
#define FIRST_USER_ADDRESS 0UL
#define PTE_SIZE (PTRS_PER_PTE*4)
#define PAGE_NONE SRMMU_PAGE_NONE
@ -433,4 +432,6 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
/* We provide our own get_unmapped_area to cope with VA holes for userland */
#define HAVE_ARCH_UNMAPPED_AREA
#define pmd_pgtable(pmd) ((pgtable_t)__pmd_page(pmd))
#endif /* !(_SPARC_PGTABLE_H) */

8
arch/sparc/include/asm/pgtable_64.h
View File

@ -95,9 +95,6 @@ bool kern_addr_valid(unsigned long addr);
#define PTRS_PER_PUD (1UL << PUD_BITS)
#define PTRS_PER_PGD (1UL << PGDIR_BITS)
/* Kernel has a separate 44bit address space. */
#define FIRST_USER_ADDRESS 0UL
#define pmd_ERROR(e) \
pr_err("%s:%d: bad pmd %p(%016lx) seen at (%pS)\n", \
__FILE__, __LINE__, &(e), pmd_val(e), __builtin_return_address(0))
@ -377,8 +374,7 @@ static inline pgprot_t pgprot_noncached(pgprot_t prot)
#define pgprot_noncached pgprot_noncached
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
struct page *page, int writable);
pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
#define arch_make_huge_pte arch_make_huge_pte
static inline unsigned long __pte_default_huge_mask(void)
{
@ -1121,6 +1117,8 @@ extern unsigned long cmdline_memory_size;
asmlinkage void do_sparc64_fault(struct pt_regs *regs);
#define pmd_pgtable(PMD) ((pte_t *)pmd_page_vaddr(PMD))
#ifdef CONFIG_HUGETLB_PAGE
#define pud_leaf_size pud_leaf_size

1
arch/sparc/kernel/sstate.c
View File

@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/notifier.h>
#include <linux/panic_notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>

6
arch/sparc/mm/hugetlbpage.c
View File

@ -177,10 +177,8 @@ static pte_t hugepage_shift_to_tte(pte_t entry, unsigned int shift)
return sun4u_hugepage_shift_to_tte(entry, shift);
}
pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
struct page *page, int writeable)
pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags)
{
unsigned int shift = huge_page_shift(hstate_vma(vma));
pte_t pte;
pte = hugepage_shift_to_tte(entry, shift);
@ -188,7 +186,7 @@ pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
#ifdef CONFIG_SPARC64
/* If this vma has ADI enabled on it, turn on TTE.mcd
*/
if (vma->vm_flags & VM_SPARC_ADI)
if (flags & VM_SPARC_ADI)
return pte_mkmcd(pte);
else
return pte_mknotmcd(pte);

1
arch/sparc/mm/init_64.c
View File

@ -27,6 +27,7 @@
#include <linux/percpu.h>
#include <linux/mmzone.h>
#include <linux/gfp.h>
#include <linux/bootmem_info.h>
#include <asm/head.h>
#include <asm/page.h>

1
arch/um/drivers/mconsole_kern.c
View File

@ -12,6 +12,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/panic_notifier.h>
#include <linux/reboot.h>
#include <linux/sched/debug.h>
#include <linux/proc_fs.h>

1
arch/um/include/asm/pgalloc.h
View File

@ -19,7 +19,6 @@
set_pmd(pmd, __pmd(_PAGE_TABLE + \
((unsigned long long)page_to_pfn(pte) << \
(unsigned long long) PAGE_SHIFT)))
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* Allocate and free page tables.

1
arch/um/include/asm/pgtable-2level.h
View File

@ -23,7 +23,6 @@
#define PTRS_PER_PTE 1024
#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
#define PTRS_PER_PGD 1024
#define FIRST_USER_ADDRESS 0UL
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \

1
arch/um/include/asm/pgtable-3level.h
View File

@ -41,7 +41,6 @@
#endif
#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \

1
arch/um/kernel/um_arch.c
View File

@ -7,6 +7,7 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/panic_notifier.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/utsname.h>

17
arch/x86/Kconfig
View File

@ -33,6 +33,7 @@ config X86_64
select NEED_DMA_MAP_STATE
select SWIOTLB
select ARCH_HAS_ELFCORE_COMPAT
select ZONE_DMA32
config FORCE_DYNAMIC_FTRACE
def_bool y
@ -63,7 +64,7 @@ config X86
select ARCH_ENABLE_HUGEPAGE_MIGRATION if X86_64 && HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if X86_64 || X86_PAE
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if (PGTABLE_LEVELS > 2) && (X86_64 || X86_PAE)
select ARCH_ENABLE_THP_MIGRATION if X86_64 && TRANSPARENT_HUGEPAGE
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_CACHE_LINE_SIZE
@ -93,6 +94,7 @@ config X86
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_ZONE_DMA_SET if EXPERT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
select ARCH_MIGHT_HAVE_PC_PARPORT
@ -344,9 +346,6 @@ config ARCH_SUSPEND_POSSIBLE
config ARCH_WANT_GENERAL_HUGETLB
def_bool y
config ZONE_DMA32
def_bool y if X86_64
config AUDIT_ARCH
def_bool y if X86_64
@ -394,16 +393,6 @@ config CC_HAS_SANE_STACKPROTECTOR
menu "Processor type and features"
config ZONE_DMA
bool "DMA memory allocation support" if EXPERT
default y
help
DMA memory allocation support allows devices with less than 32-bit
addressing to allocate within the first 16MB of address space.
Disable if no such devices will be used.
If unsure, say Y.
config SMP
bool "Symmetric multi-processing support"
help

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