arm64: KVM: Correctly handle zero register in system register accesses

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System register accesses also use zero register for Rt == 31, and
therefore using it will also result in getting SP value instead. This
patch makes them also using new accessors, introduced by the previous
patch. Since register value is no longer directly associated with storage
inside vCPU context structure, we introduce a dedicated storage for it in
struct sys_reg_params.

This refactor also gets rid of "massive hack" in kvm_handle_cp_64().

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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Pavel Fedin 2015-12-04 15:03:13 +03:00 • committed by Marc Zyngier

parent 3fec037d0f

commit 2ec5be3dbf

3 changed files with 45 additions and 48 deletions

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87

arch/arm64/kvm/sys_regs.c

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4

arch/arm64/kvm/sys_regs.h

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2

arch/arm64/kvm/sys_regs_generic_v8.c

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