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| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-10-26 08:34:09 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-12-14 11:30:41 +0000 |
| commit | c13d1683df16db16c91372177ca10c31677b5ed5 (patch) | |
| tree | c33ebab7d9dff4a45664c47edda215838ed5c5b7 /arch/arm64/kvm/hyp/fpsimd.S | |
| parent | be901e9b15cd2c8e48dc089b4655ea4a076e66fd (diff) | |
| download | linux-c13d1683df16db16c91372177ca10c31677b5ed5.tar.bz2 | |
arm64: KVM: Implement fpsimd save/restore
Implement the fpsimd save restore, keeping the lazy part in
assembler (as returning to C would be overkill).
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/kvm/hyp/fpsimd.S')
| -rw-r--r-- | arch/arm64/kvm/hyp/fpsimd.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/fpsimd.S b/arch/arm64/kvm/hyp/fpsimd.S new file mode 100644 index 000000000000..da3f22c7f14a --- /dev/null +++ b/arch/arm64/kvm/hyp/fpsimd.S @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2015 - ARM Ltd + * Author: Marc Zyngier <marc.zyngier@arm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/linkage.h> + +#include <asm/fpsimdmacros.h> + + .text + .pushsection .hyp.text, "ax" + +ENTRY(__fpsimd_save_state) + fpsimd_save x0, 1 + ret +ENDPROC(__fpsimd_save_state) + +ENTRY(__fpsimd_restore_state) + fpsimd_restore x0, 1 + ret +ENDPROC(__fpsimd_restore_state) |