From: Marc Zyngier maz@kernel.org
mainline inclusion from mainline-v5.13-rc1~76^2 commit 468f3477ef8bda1beeb91dd7f423c9bc248ac39d category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8E73O CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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.
Acked-by: Will Deacon will@kernel.org Signed-off-by: Marc Zyngier maz@kernel.org Conflicts: correct undef function in switch.h Signed-off-by: Wang ShaoBo bobo.shaobowang@huawei.com --- 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 d8ac3c0bb67c9..b4c7e04ad2a89 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -409,6 +409,8 @@ 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_max_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; \ @@ -416,7 +418,7 @@ 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_max_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 009b8a727692f..f9c3dbc999e57 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -313,7 +313,7 @@ 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_max_vq(vcpu); for (vq = SVE_VQ_MIN; vq <= max_vq; ++vq) if (sve_vq_available(vq)) vqs[vq_word(vq)] |= vq_mask(vq); @@ -441,7 +441,7 @@ 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_max_vq(vcpu);
reqoffset = SVE_SIG_ZREG_OFFSET(vq, reg_num) - SVE_SIG_REGS_OFFSET; @@ -451,7 +451,7 @@ 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_max_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 05035a9359584..805b09831f085 100644 --- a/arch/arm64/kvm/hyp/include/hyp/switch.h +++ b/arch/arm64/kvm/hyp/include/hyp/switch.h @@ -271,7 +271,7 @@ 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_max_vq(vcpu) - 1); write_sysreg_el1(__vcpu_sys_reg(vcpu, ZCR_EL1), SYS_ZCR); } else { __fpsimd_restore_state(&vcpu->arch.ctxt.fp_regs);