diff options
| author |   Mark Brown <broonie@kernel.org> | 2023-01-16 16:04:52 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2023-01-20 12:23:08 +0000 |
| commit | afe6f182752625cadf4ff97613bd2f362383bcbf (patch) | |
| tree | 47112c437bdbae5e0e77bf184b6253babf4604c5 /tools/testing/selftests/arm64/signal | |
| parent | kselftest/arm64: Enumerate SME2 in the signal test utility code (diff) | |
| download | wireguard-linux-afe6f182752625cadf4ff97613bd2f362383bcbf.tar.xz wireguard-linux-afe6f182752625cadf4ff97613bd2f362383bcbf.zip | |
kselftest/arm64: Teach the generic signal context validation about ZT
Add ZT to the set of signal contexts that the shared code understands and
validates the form of.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-17-f2fa0aef982f@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing/selftests/arm64/signal')
| -rw-r--r-- | tools/testing/selftests/arm64/signal/testcases/testcases.c | 36 | ||||
| -rw-r--r-- | tools/testing/selftests/arm64/signal/testcases/testcases.h | 1 |
2 files changed, 37 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c index d2eda7b5de26..27d495fa52f8 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.c +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c @@ -108,6 +108,26 @@ bool validate_za_context(struct za_context *za, char **err) return true; } +bool validate_zt_context(struct zt_context *zt, char **err) +{ + if (!zt || !err) + return false; + + /* If the context is present there should be at least one register */ + if (zt->nregs == 0) { + *err = "no registers"; + return false; + } + + /* Size should agree with the number of registers */ + if (zt->head.size != ZT_SIG_CONTEXT_SIZE(zt->nregs)) { + *err = "register count does not match size"; + return false; + } + + return true; +} + bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) { bool terminated = false; @@ -117,6 +137,7 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) struct extra_context *extra = NULL; struct sve_context *sve = NULL; struct za_context *za = NULL; + struct zt_context *zt = NULL; struct _aarch64_ctx *head = (struct _aarch64_ctx *)uc->uc_mcontext.__reserved; void *extra_data = NULL; @@ -177,6 +198,13 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) za = (struct za_context *)head; new_flags |= ZA_CTX; break; + case ZT_MAGIC: + if (flags & ZT_CTX) + *err = "Multiple ZT_MAGIC"; + /* Size is validated in validate_za_context() */ + zt = (struct zt_context *)head; + new_flags |= ZT_CTX; + break; case EXTRA_MAGIC: if (flags & EXTRA_CTX) *err = "Multiple EXTRA_MAGIC"; @@ -234,6 +262,9 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) if (new_flags & ZA_CTX) if (!validate_za_context(za, err)) return false; + if (new_flags & ZT_CTX) + if (!validate_zt_context(zt, err)) + return false; flags |= new_flags; @@ -245,6 +276,11 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) return false; } + if (terminated && (flags & ZT_CTX) && !(flags & ZA_CTX)) { + *err = "ZT context but no ZA context"; + return false; + } + return true; } diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.h b/tools/testing/selftests/arm64/signal/testcases/testcases.h index 040afded0b76..a08ab0d6207a 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.h +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.h @@ -18,6 +18,7 @@ #define SVE_CTX (1 << 1) #define ZA_CTX (1 << 2) #define EXTRA_CTX (1 << 3) +#define ZT_CTX (1 << 4) #define KSFT_BAD_MAGIC 0xdeadbeef |