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authorDave Hansen <dave.hansen@linux.intel.com>2016-02-12 22:02:32 +0100
committerIngo Molnar <mingo@kernel.org>2016-02-18 19:46:31 +0100
commit66d375709d2c891acc639538fd3179fa0cbb0daf (patch)
treee4130fdef51a5d4820e8e870d34a42d7b384c9b0 /mm/Kconfig
parentmm/core, arch, powerpc: Pass a protection key in to calc_vm_flag_bits() (diff)
downloadlinux-66d375709d2c891acc639538fd3179fa0cbb0daf.tar.xz
linux-66d375709d2c891acc639538fd3179fa0cbb0daf.zip
mm/core, x86/mm/pkeys: Add arch_validate_pkey()
The syscall-level code is passed a protection key and need to return an appropriate error code if the protection key is bogus. We will be using this in subsequent patches. Note that this also begins a series of arch-specific calls that we need to expose in otherwise arch-independent code. We create a linux/pkeys.h header where we will put *all* the stubs for these functions. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave@sr71.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20160212210232.774EEAAB@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 6cf439948297..2702bb6c21df 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -672,3 +672,5 @@ config FRAME_VECTOR
config ARCH_USES_HIGH_VMA_FLAGS
bool
+config ARCH_HAS_PKEYS
+ bool