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| author | Will Deacon <will.deacon@arm.com> | 2018-12-13 13:14:06 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-13 16:42:47 +0000 |
| commit | 84931327a807a4dd65d0d6b53a8ae47845c91f79 (patch) | |
| tree | f759292fbe46dd83d4b3954eb17eb53bfe480d7f /arch/arm64/include/asm/processor.h | |
| parent | 04ca3204fa09f5f55c8f113b0072004a7b364ff4 (diff) | |
| download | linux-84931327a807a4dd65d0d6b53a8ae47845c91f79.tar.bz2 | |
arm64: ptr auth: Move per-thread keys from thread_info to thread_struct
We don't need to get at the per-thread keys from assembly at all, so
they can live alongside the rest of the per-thread register state in
thread_struct instead of thread_info.
This will also allow straighforward whitelisting of the keys for
hardened usercopy should we expose them via a ptrace request later on.
Signed-off-by: Will Deacon <will.deacon@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 142c708cb429..f1a7ab18faf3 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -147,6 +147,9 @@ struct thread_struct { unsigned long fault_address; /* fault info */ unsigned long fault_code; /* ESR_EL1 value */ struct debug_info debug; /* debugging */ +#ifdef CONFIG_ARM64_PTR_AUTH + struct ptrauth_keys keys_user; +#endif }; static inline void arch_thread_struct_whitelist(unsigned long *offset, |