| commit | 6f515d842e8e1b205e54f44b9013bf14870b97a7 | |
| author | Cyril Bur <cyrilbur@gmail.com> | |
| Mon, 29 Feb 2016 06:53:50 +0000 (29 17:53 +1100) | ||
| committer | Michael Ellerman <mpe@ellerman.id.au> | |
| Wed, 2 Mar 2016 12:34:49 +0000 (2 23:34 +1100) | ||
| tree | 34f133da5b1cd6922f2728645db025bcc81b4183 | treesnapshot (tar.gz zip) |
| parent | 8792468da5e12e77e76e1edf081acf0392abb331 | commitdiff |
powerpc: Add the ability to save Altivec without giving it up
This patch adds the ability to be able to save the VEC registers to the
thread struct without giving up (disabling the facility) next time the
process returns to userspace.
This patch builds on a previous optimisation for the FPU registers in the
thread copy path to avoid a possibly pointless reload of VEC state.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This patch adds the ability to be able to save the VEC registers to the
thread struct without giving up (disabling the facility) next time the
process returns to userspace.
This patch builds on a previous optimisation for the FPU registers in the
thread copy path to avoid a possibly pointless reload of VEC state.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| arch/powerpc/include/asm/switch_to.h | diffblobblamehistory | |
| arch/powerpc/kernel/process.c | diffblobblamehistory | |
| arch/powerpc/kernel/vector.S | diffblobblamehistory |