search for: guest_physical_address

...include <linux/highmem.h> > > /* Is Linux running as the root partition? */ > bool hv_root_partition; > @@ -448,8 +449,29 @@ void __init hyperv_init(void) > > rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); > hypercall_msr.enable = 1; > - hypercall_msr.guest_physical_address = vmalloc_to_pfn(hv_hypercall_pg); > - wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); > + > + if (hv_root_partition) { > + struct page *pg; > + void *src, *dst; > + > + /* > + * Order is important here. We must enable the hypercall page > + * so it is popul...

...ux running as the root partition? */ >> > bool hv_root_partition; >> > @@ -448,8 +449,29 @@ void __init hyperv_init(void) >> > >> > rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); >> > hypercall_msr.enable = 1; >> > - hypercall_msr.guest_physical_address = vmalloc_to_pfn(hv_hypercall_pg); >> > - wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); >> > + >> > + if (hv_root_partition) { >> > + struct page *pg; >> > + void *src, *dst; >> > + >> > + /* >> > + * Order is imp...

...> bool hv_root_partition; >> >> > @@ -448,8 +449,29 @@ void __init hyperv_init(void) >> >> > >> >> > rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); >> >> > hypercall_msr.enable = 1; >> >> > - hypercall_msr.guest_physical_address = vmalloc_to_pfn(hv_hypercall_pg); >> >> > - wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); >> >> > + >> >> > + if (hv_root_partition) { >> >> > + struct page *pg; >> >> > + void *src, *dst; >> >> >...

...n( + vma, + vmf->address, + vmalloc_to_pfn(tsc_pg)); + } } } diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index aa36049..3d534d2 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -157,6 +157,9 @@ void hyperv_init(void) tsc_msr.guest_physical_address = vmalloc_to_pfn(tsc_pg); wrmsrl(HV_X64_MSR_REFERENCE_TSC, tsc_msr.as_uint64); + + hyperv_cs_tsc.archdata.vclock_mode = VCLOCK_HVCLOCK; + clocksource_register_hz(&hyperv_cs_tsc, NSEC_PER_SEC/100); return; } diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clo...

...0,28 +251,29 @@ int HvInit(void) goto Cleanup; } - gHvContext.HypercallPage = virtAddr; + g_hv_context.hypercall_page = virtAddr; DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", - gHvContext.HypercallPage, + g_hv_context.hypercall_page, (u64)hypercallMsr.guest_physical_address << PAGE_SHIFT); /* Setup the global signal event param for the signal event hypercall */ - gHvContext.SignalEventBuffer = + g_hv_context.signal_event_buffer = kmalloc(sizeof(struct hv_input_signal_event_buffer), GFP_KERNEL); - if (!gHvContext.SignalEventBuffer) + if (!g_hv_contex...

...0,28 +251,29 @@ int HvInit(void) goto Cleanup; } - gHvContext.HypercallPage = virtAddr; + g_hv_context.hypercall_page = virtAddr; DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", - gHvContext.HypercallPage, + g_hv_context.hypercall_page, (u64)hypercallMsr.guest_physical_address << PAGE_SHIFT); /* Setup the global signal event param for the signal event hypercall */ - gHvContext.SignalEventBuffer = + g_hv_context.signal_event_buffer = kmalloc(sizeof(struct hv_input_signal_event_buffer), GFP_KERNEL); - if (!gHvContext.SignalEventBuffer) + if (!g_hv_contex...

...t;address, + vmalloc_to_pfn(tsc_pg)); } if (ret == 0 || ret == -EBUSY) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 0ce8485..17519e0 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -157,6 +157,9 @@ void hyperv_init(void) tsc_msr.guest_physical_address = vmalloc_to_pfn(tsc_pg); wrmsrl(HV_X64_MSR_REFERENCE_TSC, tsc_msr.as_uint64); + + hyperv_cs_tsc.archdata.vclock_mode = VCLOCK_HVCLOCK; + clocksource_register_hz(&hyperv_cs_tsc, NSEC_PER_SEC/100); return; } diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clo...

...+ 6 files changed, 58 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6667042..cdaac9b 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5127,6 +5127,10 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu) gpa_t gpa; gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); + if (!kvm_io_bus_write(vcpu->kvm, KVM_PV_MMIO_BUS, gpa, 0, NULL)) { + skip_emulated_instruction(vcpu); + return 1; + } ret = handle_mmio_page_fault_common(vcpu, gpa, true); if (likely(ret == 1)) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f19ac0a..b9223d9 100644 --- a/a...

...+ 6 files changed, 58 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6667042..cdaac9b 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5127,6 +5127,10 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu) gpa_t gpa; gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); + if (!kvm_io_bus_write(vcpu->kvm, KVM_PV_MMIO_BUS, gpa, 0, NULL)) { + skip_emulated_instruction(vcpu); + return 1; + } ret = handle_mmio_page_fault_common(vcpu, gpa, true); if (likely(ret == 1)) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f19ac0a..b9223d9 100644 --- a/a...

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. I implemented the required support re-using pvclock_page VVAR. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. I implemented the required support re-using pvclock_page VVAR. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

...IT_BITMAP1 = 0x0000201e, + EOI_EXIT_BITMAP1_HIGH = 0x0000201f, + EOI_EXIT_BITMAP2 = 0x00002020, + EOI_EXIT_BITMAP2_HIGH = 0x00002021, + EOI_EXIT_BITMAP3 = 0x00002022, + EOI_EXIT_BITMAP3_HIGH = 0x00002023, GUEST_PHYSICAL_ADDRESS = 0x00002400, GUEST_PHYSICAL_ADDRESS_HIGH = 0x00002401, VMCS_LINK_POINTER = 0x00002800, @@ -398,6 +413,8 @@ int vmx_write_guest_msr(u32 msr, u64 val int vmx_add_guest_msr(u32 msr); int vmx_add_host_load_msr(u32 msr); void vmx_vmcs_switch(struct vmcs_struct *f...

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Hi, while we're still waiting for a definitive ACK from Microsoft that the algorithm is good for SMP case (as we can't prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from

Hi, while we're still waiting for a definitive ACK from Microsoft that the algorithm is good for SMP case (as we can't prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from

This group of patches removes all DPRINT from hv_vmbus.ko. It is divided in several patches due to size. All DPRINT calls have been removed, and where needed have been replaced with pr_XX native calls. Many debug DPRINT calls have been removed outright. The amount of clutter this driver prints has been significantly reduced. Signed-off-by: Hank Janssen <hjanssen at microsoft.com>

This group of patches removes all DPRINT from hv_vmbus.ko. It is divided in several patches due to size. All DPRINT calls have been removed, and where needed have been replaced with pr_XX native calls. Many debug DPRINT calls have been removed outright. The amount of clutter this driver prints has been significantly reduced. Signed-off-by: Hank Janssen <hjanssen at microsoft.com>