diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-12-07 22:09:21 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-02-10 13:50:34 -0500 |
| commit | 25af9081189b91df003be7e8acbe9b05f9a58c93 (patch) | |
| tree | f07f8d332882f1ef7f0d4729232dcce18f4a2aaa /arch/x86/kvm/hyperv.c | |
| parent | bd1ba5732bb954c31e2be07e8ee1397a910835e4 (diff) | |
| download | linux-25af9081189b91df003be7e8acbe9b05f9a58c93.tar.bz2 | |
KVM: x86: Refactor kvm_hv_flush_tlb() to reduce indentation
Refactor the "extended" path of kvm_hv_flush_tlb() to reduce the nesting
depth for the non-fast sparse path, and to make the code more similar to
the extended path in kvm_hv_send_ipi().
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20211207220926.718794-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index d02398c7a22d..50f9b9184ee1 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1818,31 +1818,33 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc, bool if (hc->var_cnt != bitmap_weight((unsigned long *)&valid_bank_mask, 64)) return HV_STATUS_INVALID_HYPERCALL_INPUT; - if (!hc->var_cnt && !all_cpus) + if (all_cpus) + goto do_flush; + + if (!hc->var_cnt) goto ret_success; - if (!all_cpus) { - if (hc->fast) { - if (hc->var_cnt > HV_HYPERCALL_MAX_XMM_REGISTERS - 1) - return HV_STATUS_INVALID_HYPERCALL_INPUT; - for (i = 0; i < hc->var_cnt; i += 2) { - sparse_banks[i] = sse128_lo(hc->xmm[i / 2 + 1]); - sparse_banks[i + 1] = sse128_hi(hc->xmm[i / 2 + 1]); - } - } else { - if (hc->var_cnt > 64) - return HV_STATUS_INVALID_HYPERCALL_INPUT; - - gpa = hc->ingpa + offsetof(struct hv_tlb_flush_ex, - hv_vp_set.bank_contents); - if (unlikely(kvm_read_guest(kvm, gpa, sparse_banks, - hc->var_cnt * - sizeof(sparse_banks[0])))) - return HV_STATUS_INVALID_HYPERCALL_INPUT; + if (hc->fast) { + if (hc->var_cnt > HV_HYPERCALL_MAX_XMM_REGISTERS - 1) + return HV_STATUS_INVALID_HYPERCALL_INPUT; + for (i = 0; i < hc->var_cnt; i += 2) { + sparse_banks[i] = sse128_lo(hc->xmm[i / 2 + 1]); + sparse_banks[i + 1] = sse128_hi(hc->xmm[i / 2 + 1]); } + goto do_flush; } + + if (hc->var_cnt > 64) + return HV_STATUS_INVALID_HYPERCALL_INPUT; + + gpa = hc->ingpa + offsetof(struct hv_tlb_flush_ex, + hv_vp_set.bank_contents); + if (unlikely(kvm_read_guest(kvm, gpa, sparse_banks, + hc->var_cnt * sizeof(sparse_banks[0])))) + return HV_STATUS_INVALID_HYPERCALL_INPUT; } +do_flush: /* * vcpu->arch.cr3 may not be up-to-date for running vCPUs so we can't * analyze it here, flush TLB regardless of the specified address space. |