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| author | Paul Burton <paul.burton@imgtec.com> | 2015-07-27 12:58:22 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 12:07:59 +0200 |
| commit | bf82cb30c7e58b3a9742f0a45962ebdf51befac7 (patch) | |
| tree | a17fd3321d1bbeb782620204ba7e6107ada99fb1 /arch/mips/kernel/signal-common.h | |
| parent | f1fe2d21f4e1aca8644cea888dc618f0183ad671 (diff) | |
| download | linux-bf82cb30c7e58b3a9742f0a45962ebdf51befac7.tar.gz linux-bf82cb30c7e58b3a9742f0a45962ebdf51befac7.tar.bz2 linux-bf82cb30c7e58b3a9742f0a45962ebdf51befac7.zip | |
MIPS: Save MSA extended context around signals
It is desirable for signal handlers to be allowed to make use of MSA,
particularly if auto vectorisation is used when compiling a program.
The MSA context must therefore be saved & restored before & after
invoking the signal handler. Make use of the extended context structs
defined in the preceding patch to save MSA context after the sigframe
when appropriate.
[ralf@linux-mips.org: Fixed conflicts.]
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Matthew Fortune <matthew.fortune@imgtec.com>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Richard Weinberger <richard@nod.at>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Maciej W. Rozycki <macro@codesourcery.com>
Patchwork: https://patchwork.linux-mips.org/patch/10796/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/signal-common.h')
| -rw-r--r-- | arch/mips/kernel/signal-common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h index 96b0fd82f8b5..f50d48435c68 100644 --- a/arch/mips/kernel/signal-common.h +++ b/arch/mips/kernel/signal-common.h @@ -37,4 +37,7 @@ _save_fp_context(void __user *fpregs, void __user *csr); extern asmlinkage int _restore_fp_context(void __user *fpregs, void __user *csr); +extern asmlinkage int _save_msa_all_upper(void __user *buf); +extern asmlinkage int _restore_msa_all_upper(void __user *buf); + #endif /* __SIGNAL_COMMON_H */ |