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dbfcf3cb9c
linux/arch/powerpc/mm
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Paul Mackerras dbfcf3cb9c powerpc/64: Call H_REGISTER_PROC_TBL when running as a HPT guest on POWER9 
On POWER9, since commit cc3d294013 ("powerpc/64: Enable use of radix
MMU under hypervisor on POWER9", 2017-01-30), we set both the radix and
HPT bits in the client-architecture-support (CAS) vector, which tells
the hypervisor that we can do either radix or HPT.  According to PAPR,
if we use this combination we are promising to do a H_REGISTER_PROC_TBL
hcall later on to let the hypervisor know whether we are doing radix
or HPT.  We currently do this call if we are doing radix but not if
we are doing HPT.  If the hypervisor is able to support both radix
and HPT guests, it would be entitled to defer allocation of the HPT
until the H_REGISTER_PROC_TBL call, and to fail any attempts to create
HPTEs until the H_REGISTER_PROC_TBL call.  Thus we need to do a
H_REGISTER_PROC_TBL call when we are doing HPT; otherwise we may
crash at boot time.

This adds the code to call H_REGISTER_PROC_TBL in this case, before
we attempt to create any HPT entries using H_ENTER.

Fixes: cc3d294013 ("powerpc/64: Enable use of radix MMU under hypervisor on POWER9")
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-27 19:25:08 +11:00
..
8xx_mmu.c powerpc/mm/slice: Fix hugepage allocation at hint address on 8xx 2018-03-06 09:21:23 +11:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c
copro_fault.c powerpc/mm: Update PROTFAULT handling in the page fault path 2017-02-15 20:02:39 +11:00
dma-noncoherent.c powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit 2017-06-05 19:59:03 +10:00
drmem.c powerpc/mm/drmem: Fix unexpected flag value in ibm,dynamic-memory-v2 2018-02-23 16:45:51 +11:00
dump_hashpagetable.c powerpc/64s: Replace CONFIG_PPC_STD_MMU_64 with CONFIG_PPC_BOOK3S_64 2017-11-06 16:48:14 +11:00
dump_linuxpagetables.c powerpc/mm: Introduce _PAGE_NA 2018-01-16 23:47:14 +11:00
fault.c Merge branch 'fixes' into next 2018-01-21 23:21:14 +11:00
fsl_booke_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hash64_4k.c powerpc/mm/hash64: Store the slot information at the right offset for hugetlb 2018-02-13 22:37:48 +11:00
hash64_64k.c powerpc/mm/hash64: Store the slot information at the right offset for hugetlb 2018-02-13 22:37:48 +11:00
hash_low_32.S powerpc: fix location of two EXPORT_SYMBOL 2017-09-01 16:42:45 +10:00
hash_native_64.c powerpc/mm: Drop the function native_register_proc_table() 2018-03-13 15:50:27 +11:00
hash_utils_64.c powerpc/64: Call H_REGISTER_PROC_TBL when running as a HPT guest on POWER9 2018-03-27 19:25:08 +11:00
highmem.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugepage-hash64.c powerpc/mm: Move hash table ops to a separate structure 2016-07-21 18:59:09 +10:00
hugetlbpage-book3e.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage-hash64.c powerpc/mm/hash64: Store the slot information at the right offset for hugetlb 2018-02-13 22:37:48 +11:00
hugetlbpage-radix.c powerpc updates for 4.15 2017-11-16 12:47:46 -08:00
hugetlbpage.c powerpc/mm/slice: remove radix calls to the slice code 2018-03-13 23:43:08 +11:00
init_32.c powerpc/32: Make some functions static 2018-03-13 15:50:42 +11:00
init_64.c libnvdimm for 4.16 2018-02-06 10:41:33 -08:00
init-common.c powerpc/mm: Fix crashes with 16G huge pages 2018-02-13 22:37:47 +11:00
Makefile powerpc: initial pkey plumbing 2018-01-20 21:45:03 +11:00
mem.c libnvdimm for 4.16 2018-02-06 10:41:33 -08:00
mmap.c powerpc/64s: mm_context.addr_limit is only used on hash 2017-11-13 23:35:43 +11:00
mmu_context_book3s64.c powerpc/mm/slice: Simplify and optimise slice context initialisation 2018-03-13 23:43:05 +11:00
mmu_context_hash32.c
mmu_context_iommu.c Merge branch 'topic/ppc-kvm' into next 2017-04-28 20:19:37 +10:00
mmu_context_nohash.c powerpc/mm/slice: Simplify and optimise slice context initialisation 2018-03-13 23:43:05 +11:00
mmu_context.c powerpc, membarrier: Skip memory barrier in switch_mm() 2018-02-05 21:34:02 +01:00
mmu_decl.h powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
numa.c powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove 2018-02-08 23:56:10 +11:00
pgtable_32.c powerpc/mm: extend _PAGE_PRIVILEGED to all CPUs 2018-01-16 23:47:13 +11:00
pgtable_64.c powerpc/mm: Fix crashes with 16G huge pages 2018-02-13 22:37:47 +11:00
pgtable-book3e.c powerpc/mm: Make page table size a variable 2016-05-01 18:32:48 +10:00
pgtable-book3s64.c powerpc/mm: update pmdp_invalidate to return old pmd value 2018-01-31 17:18:37 -08:00
pgtable-hash64.c mm/thp: remove pmd_huge_split_prepare() 2018-01-31 17:18:38 -08:00
pgtable-radix.c powerpc/mm: Fix crashes with 16G huge pages 2018-02-13 22:37:47 +11:00
pgtable.c powerpc/mm: extend _PAGE_PRIVILEGED to all CPUs 2018-01-16 23:47:13 +11:00
pkeys.c powerpc: Enable pkey subsystem 2018-01-21 01:06:10 +11:00
ppc_mmu_32.c powerpc32: refactor x_mapped_by_bats() and x_mapped_by_tlbcam() together 2016-03-11 17:18:02 -06:00
slb_low.S powerpc/mm/slice: Allow up to 64 low slices 2018-03-06 09:21:23 +11:00
slb.c powerpc/64s: Rename slb_allocate_realmode() to slb_allocate() 2017-06-21 16:18:33 +10:00
slice.c powerpc/mm/slice: remove radix calls to the slice code 2018-03-13 23:43:08 +11:00
subpage-prot.c powerpc/mm: Invalidate subpage_prot() system call on radix platforms 2018-01-21 01:12:21 +11:00
tlb_hash32.c powerpc/mm: remove flush_tlb_page_nohash 2016-08-01 11:15:13 +10:00
tlb_hash64.c powerpc/mm/hash64: Store the slot information at the right offset for hugetlb 2018-02-13 22:37:48 +11:00
tlb_low_64e.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
tlb_nohash_low.S powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
tlb_nohash.c powerpc/mm/nohash: do not flush the entire mm when range is a single page 2018-01-27 20:24:44 +11:00
tlb-radix.c powerpc/radix: Remove trace_tlbie call from radix__flush_tlb_all 2018-01-22 05:48:35 +11:00
vphn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vphn.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00