diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2018-12-07 21:39:31 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-13 19:42:47 +0300 |
| commit | fbedc599e9b891a6756b1c9bc2eead02b02cce77 (patch) | |
| tree | 1b832edd542d8edec1cd1df8519a7291bef53bc1 /Documentation/arm64/elf_hwcaps.txt | |
| parent | 84931327a807a4dd65d0d6b53a8ae47845c91f79 (diff) | |
| download | linux-fbedc599e9b891a6756b1c9bc2eead02b02cce77.tar.xz | |
arm64: docs: document pointer authentication
Now that we've added code to support pointer authentication, add some
documentation so that people can figure out if/how to use it.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
Cc: Andrew Jones <drjones@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/arm64/elf_hwcaps.txt')
| -rw-r--r-- | Documentation/arm64/elf_hwcaps.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt index ea819ae024dd..13d6691b37be 100644 --- a/Documentation/arm64/elf_hwcaps.txt +++ b/Documentation/arm64/elf_hwcaps.txt @@ -182,3 +182,15 @@ HWCAP_FLAGM HWCAP_SSBS Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010. + +HWCAP_PACA + + Functionality implied by ID_AA64ISAR1_EL1.APA == 0b0001 or + ID_AA64ISAR1_EL1.API == 0b0001, as described by + Documentation/arm64/pointer-authentication.txt. + +HWCAP_PACG + + Functionality implied by ID_AA64ISAR1_EL1.GPA == 0b0001 or + ID_AA64ISAR1_EL1.GPI == 0b0001, as described by + Documentation/arm64/pointer-authentication.txt. |