In order to allow the disintegration of the per-vcpu sysreg array, let's introduce a new helper (ctxt_sys_reg()) that returns the in-memory copy of a system register, picked from a given context.
__vcpu_sys_reg() is rewritten to use this helper. Signed-off-by: Marc Zyngier <m...@kernel.org> --- arch/arm64/include/asm/kvm_host.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 06c4b7aaebab..00748ceb9769 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -468,12 +468,17 @@ struct kvm_vcpu_arch { #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) /* - * Only use __vcpu_sys_reg if you know you want the memory backed version of a - * register, and not the one most recently accessed by a running VCPU. For - * example, for userspace access or for system registers that are never context - * switched, but only emulated. + * Only use __vcpu_sys_reg/ctxt_sys_reg if you know you want the + * memory backed version of a register, and not the one most recently + * accessed by a running VCPU. For example, for userspace access or + * for system registers that are never context switched, but only + * emulated. */ -#define __vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) +#define __ctxt_sys_reg(c,r) (&(c)->sys_regs[(r)]) + +#define ctxt_sys_reg(c,r) (*__ctxt_sys_reg(c,r)) + +#define __vcpu_sys_reg(v,r) (ctxt_sys_reg(&(v)->arch.ctxt, (r))) u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg); void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg); -- 2.20.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm