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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2021-06-23 15:02:05 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-06-23 19:52:57 +0300 |
| commit | 784a46618f634973a17535b7d3d03cd4ebc0ccbd (patch) | |
| tree | c70a6e0b569b4b294a34ff0dc7e0483500f69614 /arch/x86/mm | |
| parent | a75c52896b6d42d6600db4d4dd9f7e4bde9218db (diff) | |
| download | linux-784a46618f634973a17535b7d3d03cd4ebc0ccbd.tar.xz | |
x86/pkeys: Move read_pkru() and write_pkru()
write_pkru() was originally used just to write to the PKRU register. It
was mercifully short and sweet and was not out of place in pgtable.h with
some other pkey-related code.
But, later work included a requirement to also modify the task XSAVE
buffer when updating the register. This really is more related to the
XSAVE architecture than to paging.
Move the read/write_pkru() to asm/pkru.h. pgtable.h won't miss them.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121455.102647114@linutronix.de
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/pkeys.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c index a840ac78b6de..a02cfcf02d0d 100644 --- a/arch/x86/mm/pkeys.c +++ b/arch/x86/mm/pkeys.c @@ -10,6 +10,7 @@ #include <asm/cpufeature.h> /* boot_cpu_has, ... */ #include <asm/mmu_context.h> /* vma_pkey() */ +#include <asm/pkru.h> /* read/write_pkru() */ int __execute_only_pkey(struct mm_struct *mm) { |