diff options
| author | Peter Collingbourne <pcc@google.com> | 2021-07-27 23:52:56 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-07-28 20:33:43 +0300 |
| commit | 433c38f40f6a81cf3988b9372f2983912737f322 (patch) | |
| tree | b1ff27c9ffcfa0ad06e5b020f6a5557a70d1d30f /arch/arm64/include/asm/processor.h | |
| parent | 638982a03fbcdcda9bcb97b62ceec2d4a0f88162 (diff) | |
| download | linux-433c38f40f6a81cf3988b9372f2983912737f322.tar.xz | |
arm64: mte: change ASYNC and SYNC TCF settings into bitfields
Allow the user program to specify both ASYNC and SYNC TCF modes by
repurposing the existing constants as bitfields. This will allow the
kernel to select one of the modes on behalf of the user program. With
this patch the kernel will always select async mode, but a subsequent
patch will make this configurable.
Link: https://linux-review.googlesource.com/id/Icc5923c85a8ea284588cc399ae74fd19ec291230
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210727205300.2554659-3-pcc@google.com
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/processor.h')
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 54d34276fa91..ee82ebbb5e5a 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -19,6 +19,9 @@ #define MTE_CTRL_GCR_USER_EXCL_SHIFT 0 #define MTE_CTRL_GCR_USER_EXCL_MASK 0xffff +#define MTE_CTRL_TCF_SYNC (1UL << 16) +#define MTE_CTRL_TCF_ASYNC (1UL << 17) + #ifndef __ASSEMBLY__ #include <linux/build_bug.h> |