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4fc096a99e
linux/arch/arm64/include/asm
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Vitaly Kuznetsov 4fc096a99e KVM: Raise the maximum number of user memslots 
Current KVM_USER_MEM_SLOTS limits are arch specific (512 on Power, 509 on x86,
32 on s390, 16 on MIPS) but they don't really need to be. Memory slots are
allocated dynamically in KVM when added so the only real limitation is
'id_to_index' array which is 'short'. We don't have any other
KVM_MEM_SLOTS_NUM/KVM_USER_MEM_SLOTS-sized statically defined structures.

Low KVM_USER_MEM_SLOTS can be a limiting factor for some configurations.
In particular, when QEMU tries to start a Windows guest with Hyper-V SynIC
enabled and e.g. 256 vCPUs the limit is hit as SynIC requires two pages per
vCPU and the guest is free to pick any GFN for each of them, this fragments
memslots as QEMU wants to have a separate memslot for each of these pages
(which are supposed to act as 'overlay' pages).

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210127175731.2020089-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-02-09 08:17:08 -05:00
..
vdso vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
xen xen/arm: do not setup the runstate info page if kpti is enabled 2020-10-04 18:41:33 -05:00
acenv.h
acpi.h arm64/acpi: disallow AML memory opregions to access kernel memory 2020-07-14 18:02:03 +01:00
alternative-macros.h arm64: alternatives: Split up alternative.h 2020-11-09 21:49:34 +00:00
alternative.h arm64: alternatives: Split up alternative.h 2020-11-09 21:49:34 +00:00
arch_gicv3.h irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0 2020-09-13 17:52:04 +01:00
arch_timer.h arm64: arch_timer: Allow an workaround descriptor to disable compat vdso 2020-07-08 21:57:51 +01:00
archrandom.h arm64: random: Remove no longer needed prototypes 2020-10-07 14:17:20 +01:00
arm_dsu_pmu.h
arm-cci.h
asm_pointer_auth.h arm64: simplify ptrauth initialization 2020-04-28 11:23:21 +01:00
asm-bug.h
asm-offsets.h
asm-prototypes.h
asm-uaccess.h Merge branch 'for-next/misc' into for-next/core 2020-12-09 18:04:48 +00:00
assembler.h kasan, arm64: expand CONFIG_KASAN checks 2020-12-22 12:55:08 -08:00
atomic_ll_sc.h
atomic_lse.h
atomic.h locking/atomic: Move ATOMIC_INIT into linux/types.h 2020-07-29 16:14:18 +02:00
barrier.h iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer 2020-09-28 22:57:43 +01:00
bitops.h
bitrev.h
boot.h arm64: get rid of TEXT_OFFSET 2020-09-07 15:00:52 +01:00
brk-imm.h arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line 2020-11-03 14:03:38 +00:00
bug.h
cache.h arm64: kasan: align allocations for HW_TAGS 2020-12-22 12:55:08 -08:00
cacheflush.h arch, mm: make kernel_page_present() always available 2020-12-15 12:13:43 -08:00
checksum.h arm64: csum: Fix handling of bad packets 2020-07-30 17:01:38 +01:00
clocksource.h arm64: Introduce asm/vdso/clocksource.h 2020-03-21 15:23:55 +01:00
cmpxchg.h
compat.h compat: lift compat_s64 and compat_u64 to <asm-generic/compat.h> 2020-09-17 13:00:46 -04:00
compiler.h arm64: use a common .arch preamble for inline assembly 2020-08-28 11:15:15 +01:00
cpu_ops.h arm64: fix some spelling mistakes in the comments by codespell 2020-09-07 14:18:50 +01:00
cpu.h Revert "arm64: initialize per-cpu offsets earlier" 2020-10-09 11:24:17 +01:00
cpucaps.h Merge remote-tracking branch 'origin/kvm-arm64/psci-relay' into kvmarm-master/next 2020-12-09 10:00:24 +00:00
cpufeature.h ARM: 2020-12-20 10:44:05 -08:00
cpuidle.h
cputype.h arm64: Add MIDR value for KRYO2XX gold/silver CPU cores 2020-11-13 09:47:08 +00:00
current.h
daifflags.h arm64: entry: fix non-NMI kernel<->kernel transitions 2020-11-30 12:11:38 +00:00
dcc.h
debug-monitors.h arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line 2020-11-03 14:03:38 +00:00
device.h arm64: Remove dev->archdata.iommu pointer 2020-06-30 11:59:49 +02:00
dmi.h
efi.h efi: stub: get rid of efi_get_max_fdt_addr() 2020-12-09 08:37:27 +01:00
el2_setup.h arm64: Extract parts of el2_setup into a macro 2020-12-04 10:07:12 +00:00
elf.h Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK 2020-06-05 13:45:21 -07:00
esr.h arm64: mte: add in-kernel MTE helpers 2020-12-22 12:55:07 -08:00
exception.h arm64: entry: suppress W=1 prototype warnings 2020-12-15 12:38:02 +00:00
exec.h arm64: uaccess: remove set_fs() 2020-12-02 19:49:11 +00:00
extable.h arm64: Improve diagnostics when trapping BRK with FAULT_BRK_IMM 2020-09-18 16:35:54 +01:00
fb.h
fixmap.h arm64/fixmap: make notes of fixed_addresses more precisely 2020-08-08 19:25:04 +01:00
fpsimd.h arm64/sve: Implement a helper to load SVE registers from FPSIMD state 2020-09-21 18:06:33 +01:00
fpsimdmacros.h arm64/sve: Implement a helper to flush SVE registers 2020-09-21 18:06:33 +01:00
ftrace.h
futex.h arm64: uaccess: rename privileged uaccess routines 2020-12-02 19:49:10 +00:00
hardirq.h arm64: irqstat: Get rid of duplicated declaration 2020-11-23 10:31:05 +01:00
hugetlb.h arm64/hugetlb: Reserve CMA areas for gigantic pages on 16K and 64K configs 2020-07-15 13:38:03 +01:00
hw_breakpoint.h
hwcap.h Merge branch 'for-next/mte' into for-next/core 2020-10-02 12:16:11 +01:00
hyp_image.h kvm: arm64: Move nVHE hyp namespace macros to hyp_image.h 2020-09-30 08:33:52 +01:00
hypervisor.h
image.h
insn.h arm64: alternatives: Split up alternative.h 2020-11-09 21:49:34 +00:00
io.h Add and use a generic version of devmem_is_allowed() 2020-12-11 12:30:26 -08:00
irq_work.h arm64: Kill __smp_cross_call and co 2020-09-17 16:37:28 +01:00
irq.h
irqflags.h arm64: Implement arch_irqs_disabled() 2020-08-26 12:41:55 +02:00
jump_label.h
kasan.h kasan, arm64: move initialization message 2020-12-22 12:55:07 -08:00
Kbuild local64.h: make <asm/local64.h> mandatory 2020-12-29 15:36:49 -08:00
kernel-pgtable.h arm64: consistently use reserved_pg_dir 2020-11-10 17:30:40 +00:00
kexec.h
kgdb.h
kprobes.h arm64: kprobes: Remove redundant kprobe_step_ctx 2020-11-10 17:12:30 +00:00
kvm_arm.h KVM: arm64: Trap host SMCs in protected mode 2020-12-04 10:08:36 +00:00
kvm_asm.h ARM: 2020-12-20 10:44:05 -08:00
kvm_emulate.h Merge branch 'kvm-master' into kvm-next 2021-01-07 18:06:52 -05:00
kvm_host.h KVM: Raise the maximum number of user memslots 2021-02-09 08:17:08 -05:00
kvm_hyp.h KVM: arm64: Bootstrap PSCI SMC handler in nVHE EL2 2020-12-04 10:08:34 +00:00
kvm_mmu.h Merge remote-tracking branch 'origin/kvm-arm64/psci-relay' into kvmarm-master/next 2020-12-09 10:00:24 +00:00
kvm_pgtable.h KVM: arm64: Add support for relaxing stage-2 perms in generic page-table code 2020-09-11 15:51:15 +01:00
kvm_ptrauth.h KVM: arm64: Update context references from host to hyp 2020-09-15 18:39:02 +01:00
kvm_ras.h
kvm_types.h KVM: arm64: Use common KVM implementation of MMU memory caches 2020-07-09 13:29:43 -04:00
linkage.h arm64: Don't insert a BTI instruction at inner labels 2020-06-24 14:24:29 +01:00
lse.h arm64: lse: Fix LSE atomics with LLVM 2020-02-18 18:10:49 +00:00
memory.h kasan, arm64: implement HW_TAGS runtime 2020-12-22 12:55:08 -08:00
mman.h arm64: mte: Validate the PROT_MTE request via arch_validate_flags() 2020-09-04 12:46:07 +01:00
mmu_context.h asm-generic: mmu-context cleanup 2020-12-15 23:58:04 -08:00
mmu.h KVM: arm64: Move BP hardening helpers into spectre.h 2020-11-16 10:40:18 +00:00
mmzone.h
module.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
module.lds.h kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
mte-def.h arm64: mte: switch GCR_EL1 in kernel entry and exit 2020-12-22 12:55:07 -08:00
mte-kasan.h arm64: mte: switch GCR_EL1 in kernel entry and exit 2020-12-22 12:55:07 -08:00
mte.h arm64: mte: switch GCR_EL1 in kernel entry and exit 2020-12-22 12:55:07 -08:00
neon-intrinsics.h
neon.h
numa.h arm64/mm: return cpu_all_mask when node is NUMA_NO_NODE 2020-09-21 22:05:01 +01:00
page-def.h arm64/mm: Unify CONT_PTE_SHIFT 2020-09-11 16:33:43 +01:00
page.h arm64: mte: Add PROT_MTE support to mmap() and mprotect() 2020-09-04 12:46:07 +01:00
paravirt.h
pci.h arm64: Enable PCI write-combine resources under sysfs 2020-09-18 14:05:13 +01:00
percpu.h KVM: arm64: Support per_cpu_ptr in nVHE hyp code 2020-12-04 10:08:34 +00:00
perf_event.h arm64: perf: Add support caps under sysfs 2020-09-28 14:53:45 +01:00
pgalloc.h asm-generic: pgalloc: provide generic pgd_free() 2020-08-07 11:33:26 -07:00
pgtable-hwdef.h kasan: arm64: set TCR_EL1.TBID1 when enabled 2020-11-25 16:53:19 +00:00
pgtable-prot.h ARM: 2020-10-23 11:17:56 -07:00
pgtable-types.h arm64: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
pgtable.h Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
pointer_auth.h arm64: sync kernel APIAKey when installing 2020-04-21 15:52:56 +01:00
preempt.h
probes.h arm64/fpsimd: add <asm/insn.h> to <asm/kprobes.h> to fix fpsimd build 2020-11-23 10:59:00 +00:00
proc-fns.h arm64: mm: convert cpu_do_switch_mm() to C 2020-02-27 14:30:50 +00:00
processor.h arm64: mm: Fix ARCH_LOW_ADDRESS_LIMIT when !CONFIG_ZONE_DMA 2021-01-04 11:06:13 +00:00
ptdump.h
ptrace.h Merge branch 'kvm-master' into kvm-next 2021-01-07 18:06:52 -05:00
pvclock-abi.h
rwonce.h arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y 2020-11-09 21:49:34 +00:00
scs.h scs: Move scs_overflow_check() out of architecture code 2020-05-18 17:47:40 +01:00
sdei.h
seccomp.h arm64: Enable seccomp architecture tracking 2020-11-20 11:16:34 -08:00
sections.h KVM: arm64: Add .hyp.data..ro_after_init ELF section 2020-12-04 10:08:33 +00:00
shmparam.h
signal32.h
signal.h arm64: expose FAR_EL1 tag bits in siginfo 2020-11-23 18:17:39 +00:00
simd.h
smp_plat.h
smp.h arm64: Make cpu_logical_map() take unsigned int 2020-12-04 08:44:24 +00:00
sparsemem.h
spectre.h Merge remote-tracking branch 'origin/kvm-arm64/csv3' into kvmarm-master/queue 2020-12-03 19:12:24 +00:00
spinlock_types.h
spinlock.h arm64/spinlock: fix a -Wunused-function warning 2020-02-10 11:29:24 +00:00
stack_pointer.h
stackprotector.h arm64: initialize ptrauth keys for kernel booting task 2020-03-18 09:50:20 +00:00
stacktrace.h arm64: stacktrace: Make stack walk callback consistent with generic code 2020-09-18 14:24:16 +01:00
stage2_pgtable.h KVM: arm64: Remove unused page-table code 2020-09-11 15:51:15 +01:00
stat.h
string.h kasan, arm64: expand CONFIG_KASAN checks 2020-12-22 12:55:08 -08:00
suspend.h arm64: Preserve register x18 when CPU is suspended 2020-05-15 16:35:50 +01:00
sync_bitops.h
syscall_wrapper.h
syscall.h arm64: compat: Ensure upper 32 bits of x0 are zero on syscall return 2020-07-16 11:41:31 +01:00
sysreg.h Merge branch 'kvm-master' into kvm-next 2021-01-07 18:06:52 -05:00
system_misc.h arm64: expose FAR_EL1 tag bits in siginfo 2020-11-23 18:17:39 +00:00
thread_info.h arm64: make _TIF_WORK_MASK bits contiguous 2020-12-16 14:08:47 -08:00
timex.h
tlb.h arm64: tlb: Set the TTL field in flush_tlb_range 2020-07-07 11:23:47 +01:00
tlbflush.h arm64: use a common .arch preamble for inline assembly 2020-08-28 11:15:15 +01:00
topology.h arm64: wrap and generalise counter read functions 2020-11-13 20:05:10 +00:00
traps.h arm64: expose FAR_EL1 tag bits in siginfo 2020-11-23 18:17:39 +00:00
uaccess.h arm64: Move PSTATE.TCO setting to separate functions 2021-01-07 11:39:01 +00:00
unistd32.h epoll: fix compat syscall wire up of epoll_pwait2 2020-12-20 10:01:38 -08:00
unistd.h epoll: wire up syscall epoll_pwait2 2020-12-19 11:18:38 -08:00
uprobes.h
vdso.h arm64/vdso: Add time namespace page 2020-07-24 13:15:20 +01:00
vermagic.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
virt.h KVM: arm64: Fix EL2 mode availability checks 2020-12-04 10:08:36 +00:00
vmalloc.h
vmap_stack.h mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
word-at-a-time.h
xor.h