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FROMLIST: x86/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT

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Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT which turns on the
Speculative Page Fault handler when building for 64bit.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>

Link: https://lore.kernel.org/patchwork/patch/1062687/
Bug: 161210518
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I083e902d2daf671e3e06d10306dd9af591c9521b
This commit is contained in:
Laurent Dufour
2019-04-16 15:44:53 +02:00
committed by Suren Baghdasaryan
parent c9201630e8
commit 08c1a30975
1 changed files with 1 additions and 0 deletions
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arch/x86/Kconfig
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@@ -26,6 +26,7 @@ config X86_64
# Options that are inherently 64-bit kernel only:
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_SOFT_DIRTY
select MODULES_USE_ELF_RELA