search for: 598,31

...x86/kernel/kvm.c > @@ -589,6 +589,7 @@ static void kvm_wait(u8 *ptr, u8 val) > local_irq_restore(flags); > } > > +#ifdef CONFIG_X86_32 > __visible bool __kvm_vcpu_is_preempted(int cpu) > { > struct kvm_steal_time *src = &per_cpu(steal_time, cpu); > @@ -597,6 +598,31 @@ __visible bool __kvm_vcpu_is_preempted(int cpu) > } > PV_CALLEE_SAVE_REGS_THUNK(__kvm_vcpu_is_preempted); > > +#else > + > +extern bool __raw_callee_save___kvm_vcpu_is_preempted(int); > + > +asm( > +".pushsection .text;" > +".global __raw_calle...

...x86/kernel/kvm.c > @@ -589,6 +589,7 @@ static void kvm_wait(u8 *ptr, u8 val) > local_irq_restore(flags); > } > > +#ifdef CONFIG_X86_32 > __visible bool __kvm_vcpu_is_preempted(int cpu) > { > struct kvm_steal_time *src = &per_cpu(steal_time, cpu); > @@ -597,6 +598,31 @@ __visible bool __kvm_vcpu_is_preempted(int cpu) > } > PV_CALLEE_SAVE_REGS_THUNK(__kvm_vcpu_is_preempted); > > +#else > + > +extern bool __raw_callee_save___kvm_vcpu_is_preempted(int); > + > +asm( > +".pushsection .text;" > +".global __raw_calle...

...00644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -589,6 +589,7 @@ static void kvm_wait(u8 *ptr, u8 val) local_irq_restore(flags); } +#ifdef CONFIG_X86_32 __visible bool __kvm_vcpu_is_preempted(int cpu) { struct kvm_steal_time *src = &per_cpu(steal_time, cpu); @@ -597,6 +598,31 @@ __visible bool __kvm_vcpu_is_preempted(int cpu) } PV_CALLEE_SAVE_REGS_THUNK(__kvm_vcpu_is_preempted); +#else + +extern bool __raw_callee_save___kvm_vcpu_is_preempted(int); + +asm( +".pushsection .text;" +".global __raw_callee_save___kvm_vcpu_is_preempted;" +".type...

...+589,7 @@ static void kvm_wait(u8 *ptr, u8 val) >> local_irq_restore(flags); >> } >> >> +#ifdef CONFIG_X86_32 >> __visible bool __kvm_vcpu_is_preempted(int cpu) >> { >> struct kvm_steal_time *src = &per_cpu(steal_time, cpu); >> @@ -597,6 +598,31 @@ __visible bool __kvm_vcpu_is_preempted(int cpu) >> } >> PV_CALLEE_SAVE_REGS_THUNK(__kvm_vcpu_is_preempted); >> >> +#else >> + >> +extern bool __raw_callee_save___kvm_vcpu_is_preempted(int); >> + >> +asm( >> +".pushsection .text;&q...

It was found when running fio sequential write test with a XFS ramdisk on a VM running on a 2-socket x86-64 system, the %CPU times as reported by perf were as follows: 69.75% 0.59% fio [k] down_write 69.15% 0.01% fio [k] call_rwsem_down_write_failed 67.12% 1.12% fio [k] rwsem_down_write_failed 63.48% 52.77% fio [k] osq_lock 9.46% 7.88% fio [k]

It was found when running fio sequential write test with a XFS ramdisk on a VM running on a 2-socket x86-64 system, the %CPU times as reported by perf were as follows: 69.75% 0.59% fio [k] down_write 69.15% 0.01% fio [k] call_rwsem_down_write_failed 67.12% 1.12% fio [k] rwsem_down_write_failed 63.48% 52.77% fio [k] osq_lock 9.46% 7.88% fio [k]

As multi-queue nics were commonly used for high-end servers, current single queue based tap can not satisfy the requirement of scaling guest network performance as the numbers of vcpus increase. So the following series implements multiple queue support in tun/tap. In order to take advantages of this, a multi-queue capable driver and qemu were also needed. I just rebase the latest version of

As multi-queue nics were commonly used for high-end servers, current single queue based tap can not satisfy the requirement of scaling guest network performance as the numbers of vcpus increase. So the following series implements multiple queue support in tun/tap. In order to take advantages of this, a multi-queue capable driver and qemu were also needed. I just rebase the latest version of

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *