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| author | Maciej W. Rozycki <macro@imgtec.com> | 2016-10-28 10:20:09 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-11-04 03:28:17 +0300 |
| commit | c9e5603974573367c4d80964a845237a2297228c (patch) | |
| tree | 5971837f1b4c7c2e5fe92a3bb7c7c50f98822cee /arch | |
| parent | 8a98495c7008d5bdede3d53e05e69ecdc0bc614b (diff) | |
| download | linux-c9e5603974573367c4d80964a845237a2297228c.tar.xz | |
MIPS: ptrace: Also initialize the FP context on individual FCSR writes
Complement commit ac9ad83bc318 ("MIPS: prevent FP context set via ptrace
being discarded") and also initialize the FP context whenever FCSR alone
is written with a PTRACE_POKEUSR request addressing FPC_CSR, rather than
along with the full FPU register set in the case of the PTRACE_SETFPREGS
request.
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14459/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 6103b24d1bfc..fd3a9580661a 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -817,6 +817,7 @@ long arch_ptrace(struct task_struct *child, long request, break; #endif case FPC_CSR: + init_fp_ctx(child); ptrace_setfcr31(child, data); break; case DSP_BASE ... DSP_BASE + 5: { |