diff options
| author | Peter Collingbourne <pcc@google.com> | 2022-11-04 04:10:37 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-29 12:26:07 +0300 |
| commit | ef6458b1b6ca3fdb991ce4182e981a88d4c58c0f (patch) | |
| tree | d52ed45ee1bde6bbe472830fb429d3917d6bb20e /include/linux/kernel-page-flags.h | |
| parent | 2dbf12ae132cc78048615cfa19c9be64baaf0ced (diff) | |
| download | linux-ef6458b1b6ca3fdb991ce4182e981a88d4c58c0f.tar.xz | |
mm: Add PG_arch_3 page flag
As with PG_arch_2, this flag is only allowed on 64-bit architectures due
to the shortage of bits available. It will be used by the arm64 MTE code
in subsequent patches.
Signed-off-by: Peter Collingbourne <pcc@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Steven Price <steven.price@arm.com>
[catalin.marinas@arm.com: added flag preserving in __split_huge_page_tail()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221104011041.290951-5-pcc@google.com
Diffstat (limited to 'include/linux/kernel-page-flags.h')
| -rw-r--r-- | include/linux/kernel-page-flags.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kernel-page-flags.h b/include/linux/kernel-page-flags.h index eee1877a354e..859f4b0c1b2b 100644 --- a/include/linux/kernel-page-flags.h +++ b/include/linux/kernel-page-flags.h @@ -18,5 +18,6 @@ #define KPF_UNCACHED 39 #define KPF_SOFTDIRTY 40 #define KPF_ARCH_2 41 +#define KPF_ARCH_3 42 #endif /* LINUX_KERNEL_PAGE_FLAGS_H */ |