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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-06 16:30:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-06 16:30:28 -0700 |
| commit | ba3934de557a2074b89d67e29e5ce119f042d057 (patch) | |
| tree | 315878dfa78ee6d147c2160400a31c37c45e9f0e | |
| parent | Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/kvm: Make steal_time visible (diff) | |
| download | linux-dev-ba3934de557a2074b89d67e29e5ce119f042d057.tar.xz linux-dev-ba3934de557a2074b89d67e29e5ce119f042d057.zip | |
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
"Smaller update for Hyper-V to support EOI assist, plus LTO fixes"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kvm: Make steal_time visible
x86/hyperv: Make hv_vcpu_is_preempted() visible
x86/hyper-v: Implement EOI assist
| -rw-r--r-- | arch/x86/hyperv/hv_apic.c | 5 | ||||
| -rw-r--r-- | arch/x86/hyperv/hv_spinlock.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/kvm.c | 2 |
3 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index 8eb6fbee8e13..5c056b8aebef 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -86,6 +86,11 @@ static void hv_apic_write(u32 reg, u32 val) static void hv_apic_eoi_write(u32 reg, u32 val) { + struct hv_vp_assist_page *hvp = hv_vp_assist_page[smp_processor_id()]; + + if (hvp && (xchg(&hvp->apic_assist, 0) & 0x1)) + return; + wrmsr(HV_X64_MSR_EOI, val, 0); } diff --git a/arch/x86/hyperv/hv_spinlock.c b/arch/x86/hyperv/hv_spinlock.c index a861b0456b1a..07f21a06392f 100644 --- a/arch/x86/hyperv/hv_spinlock.c +++ b/arch/x86/hyperv/hv_spinlock.c @@ -56,7 +56,7 @@ static void hv_qlock_wait(u8 *byte, u8 val) /* * Hyper-V does not support this so far. */ -bool hv_vcpu_is_preempted(int vcpu) +__visible bool hv_vcpu_is_preempted(int vcpu) { return false; } diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 5c93a65ee1e5..3f0cc828cc36 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -67,7 +67,7 @@ static int __init parse_no_stealacc(char *arg) early_param("no-steal-acc", parse_no_stealacc); static DEFINE_PER_CPU_DECRYPTED(struct kvm_vcpu_pv_apf_data, apf_reason) __aligned(64); -static DEFINE_PER_CPU_DECRYPTED(struct kvm_steal_time, steal_time) __aligned(64); +DEFINE_PER_CPU_DECRYPTED(struct kvm_steal_time, steal_time) __aligned(64) __visible; static int has_steal_clock = 0; /* |