search for: kvm_emulate_hypercall

...r at bitdefender.com> --- arch/x86/kvm/x86.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 04b1d2916a0a..965c4f0108eb 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7363,16 +7363,33 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_emulate_hypercall); +#define KVM_HYPERCALL_INSN_LEN 3 + static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt) { + int err; struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt); - char instruction[3]; + char buf[KVM_HYPERCALL_INSN_LEN]; + char...

...N_CONTINUE: + break; + default: + kvmi_handle_common_event_actions(vcpu->kvm, action, + "HYPERCALL"); + } +} diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 46a135595893..b4a7805ce9e4 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7433,11 +7433,14 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) { unsigned long nr, a0, a1, a2, a3, ret; int op_64_bit; + bool kvmi_hc; - if (kvm_hv_hypercall_enabled(vcpu->kvm)) + nr = kvm_rax_read(vcpu); + kvmi_hc = (u32)nr == KVM_HC_XEN_HVM_OP; + + if (kvm_hv_hypercall_enabled(vcpu->kvm) && !kvmi_hc) return kvm_...

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer https://lkml.org/lkml/2013/8/6/178 for kvm guest part of the series. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer https://lkml.org/lkml/2013/8/6/178 for kvm guest part of the series. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer to https://lkml.org/lkml/2013/8/9/265 for kvm guest and Xen, x86 part merged to -tip spinlocks. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup)

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer to https://lkml.org/lkml/2013/8/9/265 for kvm guest and Xen, x86 part merged to -tip spinlocks. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup)

...odules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-amd.ko needs unknown symbol kvm_x86_ops WARNING: /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-amd.ko needs unknown symbol kvm_vcpu_cache WARNING: /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-amd.ko needs unknown symbol kvm_emulate_hypercall WARNING: /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-amd.ko needs unknown symbol load_pdptrs WARNING: /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-amd.ko needs unknown symbol kvm_handle_fault_on_reboot WARNING: /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-...

The 6-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. one MSR is added to aid live migration. Changes

The 6-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. one MSR is added to aid live migration. Changes

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Note: 1) patch is based on 3.4-rc3 + ticketlock

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Note: 1) patch is based on 3.4-rc3 + ticketlock

The 4-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. The V2 change discussion was in:

The 4-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. The V2 change discussion was in:

...ULL); + hva = gfn_to_hva(kvm, gpa >> PAGE_SHIFT); + if (!access_ok(VERIFY_WRITE, hva, PAGE_SIZE)) + return -EINVAL; + return roe_protect_frame(vcpu->kvm, gpa); +} +#endif + + /* * kvm_pv_kick_cpu_op: Kick a vcpu. * * @apicid - apicid of vcpu to be kicked. @@ -6737,6 +6806,11 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) case KVM_HC_CLOCK_PAIRING: ret = kvm_pv_clock_pairing(vcpu, a0, a1); break; +#endif +#ifdef CONFIG_KVM_MROE + case KVM_HC_HMROE: + ret = kvm_mroe(vcpu, a0); + break; #endif default: ret = -KVM_ENOSYS; @@ -8971,8 +9045,8 @@ static void kvm_mmu_slot_apply_flags(...

...gpa >> PAGE_SHIFT); + if (!access_ok(VERIFY_WRITE, hva, npages << PAGE_SHIFT)) + return -EINVAL; + return kvm_mroe_protect_range(vcpu->kvm, gpa, npages); +} +#endif + + /* * kvm_pv_kick_cpu_op: Kick a vcpu. * * @apicid - apicid of vcpu to be kicked. @@ -6739,6 +6830,11 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) case KVM_HC_CLOCK_PAIRING: ret = kvm_pv_clock_pairing(vcpu, a0, a1); break; +#endif +#ifdef CONFIG_KVM_MROE + case KVM_HC_HMROE: + ret = kvm_mroe(vcpu, a0, a1); + break; #endif default: ret = -KVM_ENOSYS; @@ -8973,8 +9069,8 @@ static void kvm_mmu_slot_apply_fl...

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

Here is change log from V3 To V4: - Fixing spelling/grammar mistakes suggested by Randy Dunlap - Changing the hypercall interface to be able to process multiple pages per one hypercall also suggested by Randy Dunlap. It turns out that this will save lots of vmexist/memory slot flushes when protecting many pages. [PATCH RFC V4 1/3] KVM: X86: Memory ROE documentation [PATCH RFC V4 2/3] KVM:

This series replaces the existing paravirtualized spinlock mechanism with a paravirtualized ticketlock mechanism. The series provides implementation for both Xen and KVM. Changes in V10: Addressed Konrad's review comments: - Added break in patch 5 since now we know exact cpu to wakeup - Dropped patch 12 and Konrad needs to revert two patches to enable xen on hvm 70dd4998, f10cd522c -

This series replaces the existing paravirtualized spinlock mechanism with a paravirtualized ticketlock mechanism. The series provides implementation for both Xen and KVM. Changes in V10: Addressed Konrad's review comments: - Added break in patch 5 since now we know exact cpu to wakeup - Dropped patch 12 and Konrad needs to revert two patches to enable xen on hvm 70dd4998, f10cd522c -