diff options
| author | Like Xu <likexu@tencent.com> | 2022-03-29 23:50:51 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-13 13:37:44 -0400 |
| commit | fdc298da866165ec0288fe227982f1aa0467bf5c (patch) | |
| tree | 0582fd438fe70aa0a8a85a3576c91f9fb43e8c6e /arch/x86/kvm | |
| parent | ca2a7c22a115d1a9a60ce4f61fe43d5fcaaaa516 (diff) | |
| download | linux-fdc298da866165ec0288fe227982f1aa0467bf5c.tar.bz2 | |
KVM: x86: Move kvm_ops_static_call_update() to x86.c
The kvm_ops_static_call_update() is defined in kvm_host.h. That's
completely unnecessary, it should have exactly one caller,
kvm_arch_hardware_setup(). Move the helper to x86.c and have it do the
actual memcpy() of the ops in addition to the static call updates. This
will also allow for cleanly giving kvm_pmu_ops static_call treatment.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Like Xu <likexu@tencent.com>
[sean: Move memcpy() into the helper and rename accordingly]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220329235054.3534728-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/x86.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 10ad1029f69a..d22fc56d8bb8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -11618,6 +11618,22 @@ void kvm_arch_hardware_disable(void) drop_user_return_notifiers(); } +static inline void kvm_ops_update(struct kvm_x86_init_ops *ops) +{ + memcpy(&kvm_x86_ops, ops->runtime_ops, sizeof(kvm_x86_ops)); + +#define __KVM_X86_OP(func) \ + static_call_update(kvm_x86_##func, kvm_x86_ops.func); +#define KVM_X86_OP(func) \ + WARN_ON(!kvm_x86_ops.func); __KVM_X86_OP(func) +#define KVM_X86_OP_OPTIONAL __KVM_X86_OP +#define KVM_X86_OP_OPTIONAL_RET0(func) \ + static_call_update(kvm_x86_##func, (void *)kvm_x86_ops.func ? : \ + (void *)__static_call_return0); +#include <asm/kvm-x86-ops.h> +#undef __KVM_X86_OP +} + int kvm_arch_hardware_setup(void *opaque) { struct kvm_x86_init_ops *ops = opaque; @@ -11632,8 +11648,7 @@ int kvm_arch_hardware_setup(void *opaque) if (r != 0) return r; - memcpy(&kvm_x86_ops, ops->runtime_ops, sizeof(kvm_x86_ops)); - kvm_ops_static_call_update(); + kvm_ops_update(ops); kvm_register_perf_callbacks(ops->handle_intel_pt_intr); |