diff options
Diffstat (limited to 'arch/arm64/kernel/ptrace.c')
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 47d8a7472171..60ebc3060cf1 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1438,7 +1438,7 @@ static const struct user_regset aarch64_regsets[] = { #ifdef CONFIG_ARM64_SME [REGSET_SSVE] = { /* Streaming mode SVE */ .core_note_type = NT_ARM_SSVE, - .n = DIV_ROUND_UP(SVE_PT_SIZE(SVE_VQ_MAX, SVE_PT_REGS_SVE), + .n = DIV_ROUND_UP(SVE_PT_SIZE(SME_VQ_MAX, SVE_PT_REGS_SVE), SVE_VQ_BYTES), .size = SVE_VQ_BYTES, .align = SVE_VQ_BYTES, @@ -1447,7 +1447,15 @@ static const struct user_regset aarch64_regsets[] = { }, [REGSET_ZA] = { /* SME ZA */ .core_note_type = NT_ARM_ZA, - .n = DIV_ROUND_UP(ZA_PT_ZA_SIZE(SVE_VQ_MAX), SVE_VQ_BYTES), + /* + * ZA is a single register but it's variably sized and + * the ptrace core requires that the size of any data + * be an exact multiple of the configured register + * size so report as though we had SVE_VQ_BYTES + * registers. These values aren't exposed to + * userspace. + */ + .n = DIV_ROUND_UP(ZA_PT_SIZE(SME_VQ_MAX), SVE_VQ_BYTES), .size = SVE_VQ_BYTES, .align = SVE_VQ_BYTES, .regset_get = za_get, |