| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <YVOQQfgNDO3L0RsS@google.com>
Date: Tue, 28 Sep 2021 21:59:29 +0000
From: David Matlack <dmatlack@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Marc Zyngier <maz@...nel.org>, Huacai Chen <chenhuacai@...nel.org>,
Aleksandar Markovic <aleksandar.qemu.devel@...il.com>,
Paul Mackerras <paulus@...abs.org>,
Christian Borntraeger <borntraeger@...ibm.com>,
Janosch Frank <frankja@...ux.ibm.com>,
Paolo Bonzini <pbonzini@...hat.com>,
James Morse <james.morse@....com>,
Alexandru Elisei <alexandru.elisei@....com>,
Suzuki K Poulose <suzuki.poulose@....com>,
David Hildenbrand <david@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Claudio Imbrenda <imbrenda@...ux.ibm.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
linux-mips@...r.kernel.org, kvm@...r.kernel.org,
kvm-ppc@...r.kernel.org, linux-kernel@...r.kernel.org,
Jing Zhang <jingzhangos@...gle.com>
Subject: Re: [PATCH 08/14] KVM: x86: Tweak halt emulation helper names to
free up kvm_vcpu_halt()
On Fri, Sep 24, 2021 at 05:55:22PM -0700, Sean Christopherson wrote:
> Rename a variety of HLT-related helpers to free up the function name
> "kvm_vcpu_halt" for future use in generic KVM code, e.g. to differentiate
> between "block" and "halt".
>
> No functional change intended.
>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
Reviewed-by: David Matlack <dmatlack@...gle.com>
> ---
> arch/x86/include/asm/kvm_host.h | 2 +-
> arch/x86/kvm/vmx/nested.c | 2 +-
> arch/x86/kvm/vmx/vmx.c | 4 ++--
> arch/x86/kvm/x86.c | 13 +++++++------
> 4 files changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 4e8c21083bdb..cfebef10b89c 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1679,7 +1679,7 @@ int kvm_emulate_monitor(struct kvm_vcpu *vcpu);
> int kvm_fast_pio(struct kvm_vcpu *vcpu, int size, unsigned short port, int in);
> int kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
> int kvm_emulate_halt(struct kvm_vcpu *vcpu);
> -int kvm_vcpu_halt(struct kvm_vcpu *vcpu);
> +int kvm_emulate_halt_noskip(struct kvm_vcpu *vcpu);
> int kvm_emulate_ap_reset_hold(struct kvm_vcpu *vcpu);
> int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
>
> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
> index eedcebf58004..f689e463b678 100644
> --- a/arch/x86/kvm/vmx/nested.c
> +++ b/arch/x86/kvm/vmx/nested.c
> @@ -3618,7 +3618,7 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
> !(nested_cpu_has(vmcs12, CPU_BASED_INTR_WINDOW_EXITING) &&
> (vmcs12->guest_rflags & X86_EFLAGS_IF))) {
> vmx->nested.nested_run_pending = 0;
> - return kvm_vcpu_halt(vcpu);
> + return kvm_emulate_halt_noskip(vcpu);
> }
> break;
> case GUEST_ACTIVITY_WAIT_SIPI:
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index d118daed0530..858f5f1f1273 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -4740,7 +4740,7 @@ static int handle_rmode_exception(struct kvm_vcpu *vcpu,
> if (kvm_emulate_instruction(vcpu, 0)) {
> if (vcpu->arch.halt_request) {
> vcpu->arch.halt_request = 0;
> - return kvm_vcpu_halt(vcpu);
> + return kvm_emulate_halt_noskip(vcpu);
> }
> return 1;
> }
> @@ -5414,7 +5414,7 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
>
> if (vcpu->arch.halt_request) {
> vcpu->arch.halt_request = 0;
> - return kvm_vcpu_halt(vcpu);
> + return kvm_emulate_halt_noskip(vcpu);
> }
>
> /*
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index b0c21d42f453..eade8a2bdccf 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -8643,7 +8643,7 @@ void kvm_arch_exit(void)
> #endif
> }
>
> -static int __kvm_vcpu_halt(struct kvm_vcpu *vcpu, int state, int reason)
> +static int __kvm_emulate_halt(struct kvm_vcpu *vcpu, int state, int reason)
> {
> ++vcpu->stat.halt_exits;
> if (lapic_in_kernel(vcpu)) {
> @@ -8655,11 +8655,11 @@ static int __kvm_vcpu_halt(struct kvm_vcpu *vcpu, int state, int reason)
> }
> }
>
> -int kvm_vcpu_halt(struct kvm_vcpu *vcpu)
> +int kvm_emulate_halt_noskip(struct kvm_vcpu *vcpu)
> {
> - return __kvm_vcpu_halt(vcpu, KVM_MP_STATE_HALTED, KVM_EXIT_HLT);
> + return __kvm_emulate_halt(vcpu, KVM_MP_STATE_HALTED, KVM_EXIT_HLT);
> }
> -EXPORT_SYMBOL_GPL(kvm_vcpu_halt);
> +EXPORT_SYMBOL_GPL(kvm_emulate_halt_noskip);
>
> int kvm_emulate_halt(struct kvm_vcpu *vcpu)
> {
> @@ -8668,7 +8668,7 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
> * TODO: we might be squashing a GUESTDBG_SINGLESTEP-triggered
> * KVM_EXIT_DEBUG here.
> */
> - return kvm_vcpu_halt(vcpu) && ret;
> + return kvm_emulate_halt_noskip(vcpu) && ret;
> }
> EXPORT_SYMBOL_GPL(kvm_emulate_halt);
>
> @@ -8676,7 +8676,8 @@ int kvm_emulate_ap_reset_hold(struct kvm_vcpu *vcpu)
> {
> int ret = kvm_skip_emulated_instruction(vcpu);
>
> - return __kvm_vcpu_halt(vcpu, KVM_MP_STATE_AP_RESET_HOLD, KVM_EXIT_AP_RESET_HOLD) && ret;
> + return __kvm_emulate_halt(vcpu, KVM_MP_STATE_AP_RESET_HOLD,
> + KVM_EXIT_AP_RESET_HOLD) && ret;
> }
> EXPORT_SYMBOL_GPL(kvm_emulate_ap_reset_hold);
>
> --
> 2.33.0.685.g46640cef36-goog
>
Powered by blists - more mailing lists