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| author | Shawn Anastasio <shawn@anastas.io> | 2020-08-21 21:55:56 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-08-24 07:12:53 +0300 |
| commit | 12564485ed8caac3c18572793ec01330792c7191 (patch) | |
| tree | 4c39433df7192a8b16f72299def2b1bc6c634fb4 /include/linux | |
| parent | 64ef8f2c4791940d7f3945507b6a45c20d959260 (diff) | |
| download | linux-12564485ed8caac3c18572793ec01330792c7191.tar.xz | |
Revert "powerpc/64s: Remove PROT_SAO support"
This reverts commit 5c9fa16e8abd342ce04dc830c1ebb2a03abf6c05.
Since PROT_SAO can still be useful for certain classes of software,
reintroduce it. Concerns about guest migration for LPARs using SAO
will be addressed next.
Signed-off-by: Shawn Anastasio <shawn@anastas.io>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200821185558.35561-2-shawn@anastas.io
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 1983e08f5906..5abe6df4247e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -321,6 +321,8 @@ extern unsigned int kobjsize(const void *objp); #if defined(CONFIG_X86) # define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ +#elif defined(CONFIG_PPC) +# define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ #elif defined(CONFIG_PARISC) # define VM_GROWSUP VM_ARCH_1 #elif defined(CONFIG_IA64) |