diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2020-01-14 02:30:22 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-01-14 20:11:46 +0300 |
| commit | 6d502b6ba1b267b35a70708aa0f61bbd05cf065b (patch) | |
| tree | 19237c35c3347c989b86af2652c56e4abdefc085 /arch/arm64/kernel/signal32.c | |
| parent | c9d66999f064947e6b577ceacc1eb2fbca6a8d3c (diff) | |
| download | linux-6d502b6ba1b267b35a70708aa0f61bbd05cf065b.tar.xz | |
arm64: signal: nofpsimd: Handle fp/simd context for signal frames
Make sure we try to save/restore the vfp/fpsimd context for signal
handling only when the fp/simd support is available. Otherwise, skip
the frames.
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/signal32.c')
| -rw-r--r-- | arch/arm64/kernel/signal32.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index 12a585386c2f..82feca6f7052 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -223,7 +223,7 @@ static int compat_restore_sigframe(struct pt_regs *regs, err |= !valid_user_regs(®s->user_regs, current); aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace; - if (err == 0) + if (err == 0 && system_supports_fpsimd()) err |= compat_restore_vfp_context(&aux->vfp); return err; @@ -419,7 +419,7 @@ static int compat_setup_sigframe(struct compat_sigframe __user *sf, aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace; - if (err == 0) + if (err == 0 && system_supports_fpsimd()) err |= compat_preserve_vfp_context(&aux->vfp); __put_user_error(0, &aux->end_magic, err); |