ARM: KVM: Add VFP save/restore

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This is almost a copy/paste of the existing version, with a couple
of subtle differences:
- Only write to FPEXC once on the save path
- Add an isb when enabling VFP access

The patch also defines a few sysreg accessors and a __vfp_enabled
predicate that test the VFP trapping state.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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This commit is contained in:

Marc Zyngier 2016-01-04 15:41:51 +00:00

parent c0c2cdbffe

commit 59cbcdb5d8

3 changed files with 82 additions and 0 deletions

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1

arch/arm/kvm/hyp/Makefile

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13

arch/arm/kvm/hyp/hyp.h

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68

arch/arm/kvm/hyp/vfp.S

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