[PATCH 04/10] KVM: arm64: Introduce vcpu_sve_vq() helper
From: Marc Zyngier <maz@kernel.org>
Date: 2021-03-16 10:15:58
Also in:
kvm, kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
The KVM code contains a number of "sve_vq_from_vl(vcpu->arch.sve_max_vl)" instances, and we are about to add more. Introduce vcpu_sve_vq() as a shorthand for this expression. Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/include/asm/kvm_host.h | 4 +++- arch/arm64/kvm/guest.c | 6 +++--- arch/arm64/kvm/hyp/include/hyp/switch.h | 2 +- 3 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index fb1d78299ba0..c4afe3d3397f 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h@@ -375,6 +375,8 @@ struct kvm_vcpu_arch { #define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) + \ sve_ffr_offset((vcpu)->arch.sve_max_vl)) +#define vcpu_sve_vq(vcpu) sve_vq_from_vl((vcpu)->arch.sve_max_vl) + #define vcpu_sve_state_size(vcpu) ({ \ size_t __size_ret; \ unsigned int __vcpu_vq; \
@@ -382,7 +384,7 @@ struct kvm_vcpu_arch { if (WARN_ON(!sve_vl_valid((vcpu)->arch.sve_max_vl))) { \ __size_ret = 0; \ } else { \ - __vcpu_vq = sve_vq_from_vl((vcpu)->arch.sve_max_vl); \ + __vcpu_vq = vcpu_sve_vq(vcpu); \ __size_ret = SVE_SIG_REGS_SIZE(__vcpu_vq); \ } \ \
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 9bbd30e62799..5e7cefbe8509 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c@@ -299,7 +299,7 @@ static int get_sve_vls(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) memset(vqs, 0, sizeof(vqs)); - max_vq = sve_vq_from_vl(vcpu->arch.sve_max_vl); + max_vq = vcpu_sve_vq(vcpu); for (vq = SVE_VQ_MIN; vq <= max_vq; ++vq) if (sve_vq_available(vq)) vqs[vq_word(vq)] |= vq_mask(vq);
@@ -427,7 +427,7 @@ static int sve_reg_to_region(struct sve_state_reg_region *region, if (!vcpu_has_sve(vcpu) || (reg->id & SVE_REG_SLICE_MASK) > 0) return -ENOENT; - vq = sve_vq_from_vl(vcpu->arch.sve_max_vl); + vq = vcpu_sve_vq(vcpu); reqoffset = SVE_SIG_ZREG_OFFSET(vq, reg_num) - SVE_SIG_REGS_OFFSET;
@@ -437,7 +437,7 @@ static int sve_reg_to_region(struct sve_state_reg_region *region, if (!vcpu_has_sve(vcpu) || (reg->id & SVE_REG_SLICE_MASK) > 0) return -ENOENT; - vq = sve_vq_from_vl(vcpu->arch.sve_max_vl); + vq = vcpu_sve_vq(vcpu); reqoffset = SVE_SIG_PREG_OFFSET(vq, reg_num) - SVE_SIG_REGS_OFFSET;
diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
index d762d5bdc2d5..fb68271c1a0f 100644
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h@@ -268,7 +268,7 @@ static inline bool __hyp_handle_fpsimd(struct kvm_vcpu *vcpu) if (sve_guest) { __sve_restore_state(vcpu_sve_pffr(vcpu), &vcpu->arch.ctxt.fp_regs.fpsr, - sve_vq_from_vl(vcpu->arch.sve_max_vl) - 1); + vcpu_sve_vq(vcpu) - 1); write_sysreg_el1(__vcpu_sys_reg(vcpu, ZCR_EL1), SYS_ZCR); } else { __fpsimd_restore_state(&vcpu->arch.ctxt.fp_regs);
--
2.29.2
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