From: isaku.yamahata@intel.com
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>
Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com,
Kai Huang <kai.huang@intel.com>, Chao Gao <chao.gao@intel.com>,
Atish Patra <atishp@atishpatra.org>,
Shaokun Zhang <zhangshaokun@hisilicon.com>,
Qi Liu <liuqi115@huawei.com>, John Garry <john.garry@huawei.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Huang Ying <ying.huang@intel.com>,
Huacai Chen <chenhuacai@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Borislav Petkov <bp@alien8.de>
Subject: [PATCH v3 03/22] KVM: x86: Move check_processor_compatibility from init ops to runtime ops
Date: Thu, 1 Sep 2022 19:17:38 -0700 [thread overview]
Message-ID: <aadf5be7c89994792c3efe853328f6a08dd68919.1662084396.git.isaku.yamahata@intel.com> (raw)
In-Reply-To: <cover.1662084396.git.isaku.yamahata@intel.com>
From: Chao Gao <chao.gao@intel.com>
so that KVM can do compatibility checks on hotplugged CPUs. Drop __init
from check_processor_compatibility() and its callees.
use a static_call() to invoke .check_processor_compatibility.
Opportunistically rename {svm,vmx}_check_processor_compat to conform
to the naming convention of fields of kvm_x86_ops.
Signed-off-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220216031528.92558-2-chao.gao@intel.com
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/include/asm/kvm-x86-ops.h | 1 +
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/svm/svm.c | 4 ++--
arch/x86/kvm/vmx/vmx.c | 14 +++++++-------
arch/x86/kvm/x86.c | 3 +--
5 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index 51f777071584..3bc45932e2d1 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -129,6 +129,7 @@ KVM_X86_OP(msr_filter_changed)
KVM_X86_OP(complete_emulated_msr)
KVM_X86_OP(vcpu_deliver_sipi_vector)
KVM_X86_OP_OPTIONAL_RET0(vcpu_get_apicv_inhibit_reasons);
+KVM_X86_OP(check_processor_compatibility)
#undef KVM_X86_OP
#undef KVM_X86_OP_OPTIONAL
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 2c96c43c313a..5df5d88d345f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1445,6 +1445,7 @@ static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode_logical)
struct kvm_x86_ops {
const char *name;
+ int (*check_processor_compatibility)(void);
int (*hardware_enable)(void);
void (*hardware_disable)(void);
void (*hardware_unsetup)(void);
@@ -1655,7 +1656,6 @@ struct kvm_x86_nested_ops {
struct kvm_x86_init_ops {
int (*cpu_has_kvm_support)(void);
int (*disabled_by_bios)(void);
- int (*check_processor_compatibility)(void);
int (*hardware_setup)(void);
unsigned int (*handle_intel_pt_intr)(void);
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index f3813dbacb9f..371300f03f55 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4134,7 +4134,7 @@ svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
hypercall[2] = 0xd9;
}
-static int __init svm_check_processor_compat(void)
+static int svm_check_processor_compatibility(void)
{
return 0;
}
@@ -4740,6 +4740,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
.name = "kvm_amd",
.hardware_unsetup = svm_hardware_unsetup,
+ .check_processor_compatibility = svm_check_processor_compatibility,
.hardware_enable = svm_hardware_enable,
.hardware_disable = svm_hardware_disable,
.has_emulated_msr = svm_has_emulated_msr,
@@ -5122,7 +5123,6 @@ static struct kvm_x86_init_ops svm_init_ops __initdata = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
.hardware_setup = svm_hardware_setup,
- .check_processor_compatibility = svm_check_processor_compat,
.runtime_ops = &svm_x86_ops,
.pmu_ops = &amd_pmu_ops,
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index d7f8331d6f7e..3cf7f18a4115 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2495,8 +2495,8 @@ static bool cpu_has_sgx(void)
return cpuid_eax(0) >= 0x12 && (cpuid_eax(0x12) & BIT(0));
}
-static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
- u32 msr, u32 *result)
+static int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
+ u32 msr, u32 *result)
{
u32 vmx_msr_low, vmx_msr_high;
u32 ctl = ctl_min | ctl_opt;
@@ -2514,7 +2514,7 @@ static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
return 0;
}
-static __init u64 adjust_vmx_controls64(u64 ctl_opt, u32 msr)
+static u64 adjust_vmx_controls64(u64 ctl_opt, u32 msr)
{
u64 allowed;
@@ -2523,8 +2523,8 @@ static __init u64 adjust_vmx_controls64(u64 ctl_opt, u32 msr)
return ctl_opt & allowed;
}
-static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
- struct vmx_capability *vmx_cap)
+static int setup_vmcs_config(struct vmcs_config *vmcs_conf,
+ struct vmx_capability *vmx_cap)
{
u32 vmx_msr_low, vmx_msr_high;
u32 min, opt, min2, opt2;
@@ -7417,7 +7417,7 @@ static int vmx_vm_init(struct kvm *kvm)
return 0;
}
-static int __init vmx_check_processor_compat(void)
+static int vmx_check_processor_compatibility(void)
{
struct vmcs_config vmcs_conf;
struct vmx_capability vmx_cap;
@@ -8015,6 +8015,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = {
.hardware_unsetup = vmx_hardware_unsetup,
+ .check_processor_compatibility = vmx_check_processor_compatibility,
.hardware_enable = vmx_hardware_enable,
.hardware_disable = vmx_hardware_disable,
.has_emulated_msr = vmx_has_emulated_msr,
@@ -8404,7 +8405,6 @@ static __init int hardware_setup(void)
static struct kvm_x86_init_ops vmx_init_ops __initdata = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
- .check_processor_compatibility = vmx_check_processor_compat,
.hardware_setup = hardware_setup,
.handle_intel_pt_intr = NULL,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fd021581ca60..5f12a7ed6f94 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12001,7 +12001,6 @@ void kvm_arch_hardware_unsetup(void)
int kvm_arch_check_processor_compat(void *opaque)
{
struct cpuinfo_x86 *c = &cpu_data(smp_processor_id());
- struct kvm_x86_init_ops *ops = opaque;
WARN_ON(!irqs_disabled());
@@ -12009,7 +12008,7 @@ int kvm_arch_check_processor_compat(void *opaque)
__cr4_reserved_bits(cpu_has, &boot_cpu_data))
return -EIO;
- return ops->check_processor_compatibility();
+ return static_call(kvm_x86_check_processor_compatibility)();
}
bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu)
--
2.25.1
next prev parent reply other threads:[~2022-09-02 2:18 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 2:17 [PATCH v3 00/22] KVM: hardware enable/disable reorganize isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 01/22] KVM: x86: Drop kvm_user_return_msr_cpu_online() isaku.yamahata
2022-09-05 1:59 ` Chao Gao
2022-09-05 5:30 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 02/22] KVM: x86: Use this_cpu_ptr() instead of per_cpu_ptr(smp_processor_id()) isaku.yamahata
2022-09-05 5:35 ` Yuan Yao
2022-09-02 2:17 ` isaku.yamahata [this message]
2022-09-05 5:42 ` [PATCH v3 03/22] KVM: x86: Move check_processor_compatibility from init ops to runtime ops Yuan Yao
2022-09-02 2:17 ` [PATCH v3 04/22] Partially revert "KVM: Pass kvm_init()'s opaque param to additional arch funcs" isaku.yamahata
2022-09-05 5:48 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 05/22] KVM: Provide more information in kernel log if hardware enabling fails isaku.yamahata
2022-09-05 5:56 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 06/22] KVM: arm64: Simplify the CPUHP logic isaku.yamahata
2022-09-05 7:05 ` Yuan Yao
2022-09-05 9:29 ` Marc Zyngier
2022-09-05 12:39 ` Marc Zyngier
2022-09-07 15:12 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 07/22] KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section isaku.yamahata
2022-09-05 7:49 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 08/22] KVM: Do compatibility checks on hotplugged CPUs isaku.yamahata
2022-09-06 1:25 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 09/22] KVM: Do processor compatibility check on resume isaku.yamahata
2022-09-05 8:40 ` Yuan Yao
2022-09-05 9:27 ` Yuan Yao
2022-09-08 18:21 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 10/22] KVM: Drop kvm_count_lock and instead protect kvm_usage_count with kvm_lock isaku.yamahata
2022-09-06 2:46 ` Yuan Yao
2022-09-06 6:32 ` Marc Zyngier
2022-09-06 21:44 ` Isaku Yamahata
2022-09-08 18:24 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 11/22] KVM: Add arch hooks for PM events with empty stub isaku.yamahata
2022-09-06 6:25 ` Yuan Yao
2022-09-08 19:11 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 12/22] KVM: x86: Move TSC fixup logic to KVM arch resume callback isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 13/22] KVM: Add arch hook when VM is added/deleted isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 14/22] KVM: Move out KVM arch PM hooks and hardware enable/disable logic isaku.yamahata
2022-09-06 7:43 ` Yuan Yao
2022-09-08 19:15 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 15/22] KVM: kvm_arch.c: Remove _nolock post fix isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 16/22] KVM: kvm_arch.c: Remove a global variable, hardware_enable_failed isaku.yamahata
2022-09-07 5:56 ` Yuan Yao
2022-09-08 22:51 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 17/22] KVM: x86: Duplicate arch callbacks related to pm events isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 18/22] KVM: Eliminate kvm_arch_post_init_vm() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 19/22] KVM: x86: Delete kvm_arch_hardware_enable/disable() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 20/22] KVM: Add config to not compile kvm_arch.c isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 21/22] RFC: KVM: x86: Remove cpus_hardware_enabled and related sanity check isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 22/22] RFC: KVM: " isaku.yamahata
2022-09-05 15:38 ` [PATCH v3 00/22] KVM: hardware enable/disable reorganize Marc Zyngier
2022-09-06 22:25 ` Isaku Yamahata
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