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...) and enabled wait (similar to in kernel hlt). In order to achieve that, this patch also introduces intercept handling for instruction intercepts, and it implements load control instructions. This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both the vm file descriptors and the vcpu file descriptors. In case this ioctl is issued against a vm file descriptor, the interrupt is considered floating. Floating interrupts may be delivered to any virtual cpu in the configuration. The following interrupts are supported: SIGP STOP - interprocessor signal that stops a remote cpu S...

...ntions for special registers > which aren't defined in asm-ia64/ia64regs. Please put missing definitions of registers into asm-ia64/ia64regs.h if they are official definitions from the spec. > kvm_minstate.h : Marcos about Min save routines. > lapic.h: apic structure definition. > vcpu.h : routions related to vcpu virtualization. > vti.h : Some macros or routines for VT support on Itanium. > Signed-off-by: Xiantao Zhang <xiantao.zhang at intel.com> > +/* > + * Flushrs instruction stream. > + */ > +#define ia64_flushrs() asm volatile ("flushrs;;&quot...

...ntions for special registers > which aren't defined in asm-ia64/ia64regs. Please put missing definitions of registers into asm-ia64/ia64regs.h if they are official definitions from the spec. > kvm_minstate.h : Marcos about Min save routines. > lapic.h: apic structure definition. > vcpu.h : routions related to vcpu virtualization. > vti.h : Some macros or routines for VT support on Itanium. > Signed-off-by: Xiantao Zhang <xiantao.zhang at intel.com> > +/* > + * Flushrs instruction stream. > + */ > +#define ia64_flushrs() asm volatile ("flushrs;;&quot...

From: Nicu?or C??u <ncitu at bitdefender.com> This would be used either if the introspection tool request it as a reply to a KVMI_EVENT_PF event or to cope with instructions that cannot be handled by the x86 emulator during the handling of a VMEXIT. In these situations, all other vCPU-s are kicked and held, the EPT-based protection is removed and the guest is single stepped by the vCPU that triggered the initial VMEXIT. Upon completion the EPT-base protection is reinstalled and all vCPU-s all allowed to return to the guest. This is a rather slow workaround that kicks in occasio...

...de/asm/kvmi_host.h @@ -23,6 +23,12 @@ struct kvmi_interception { DECLARE_BITMAP(low, KVMI_NUM_MSR); DECLARE_BITMAP(high, KVMI_NUM_MSR); } kvmi_mask; + struct { + DECLARE_BITMAP(low, KVMI_NUM_MSR); + DECLARE_BITMAP(high, KVMI_NUM_MSR); + } kvm_mask; + bool (*monitor_fct)(struct kvm_vcpu *vcpu, u32 msr, + bool enable); } msrw; }; @@ -44,6 +50,8 @@ void kvmi_xsetbv_event(struct kvm_vcpu *vcpu); bool kvmi_monitor_desc_intercept(struct kvm_vcpu *vcpu, bool enable); bool kvmi_descriptor_event(struct kvm_vcpu *vcpu, u8 descriptor, u8 write); bool kvmi_msr_event(struct kvm...

...sie64a.o intercept.o interrupt.o priv.o obj-$(CONFIG_KVM) += kvm.o Index: kvm/arch/s390/kvm/intercept.c =================================================================== --- kvm.orig/arch/s390/kvm/intercept.c +++ kvm/arch/s390/kvm/intercept.c @@ -100,6 +100,7 @@ static int handle_lctl(struct kvm_vcpu * } static intercept_handler_t instruction_handlers[256] = { + [0xb2] = kvm_s390_handle_priv, [0xb7] = handle_lctl, [0xeb] = handle_lctg, }; Index: kvm/arch/s390/kvm/kvm-s390.c =================================================================== --- kvm.orig/arch/s390/kvm/kvm-s390.c +++ kvm...

...19" memory="62000000"/> <cell cpus="20-23" memory="62000000"/> <cell cpus="24-27" memory="62000000"/> <cell cpus="28-31" memory="62000000"/> </numa> </cpu> <cputune> <vcpupin vcpu="0" cpuset="0"/> <vcpupin vcpu="1" cpuset="1"/> <vcpupin vcpu="2" cpuset="2"/> <vcpupin vcpu="3" cpuset="3"/> <vcpupin vcpu="4" cpuset="4"/> <vcpupin v...

...n/kvmi_int.h | 6 +- 6 files changed, 157 insertions(+), 5 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 9cf45ca73af5..fbd9ecc41177 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -815,6 +815,9 @@ struct kvm_vcpu_arch { /* #PF translated error code from EPT/NPT exit reason */ u64 error_code; + + /* Control the interception for KVM Introspection */ + struct kvmi_interception *kvmi; }; struct kvm_lpage_info { diff --git a/arch/x86/include/asm/kvmi_host.h b/arch/x86/include/asm/kvmi_host.h index 360a...

On Thu, Jul 07, 2016 at 04:48:05PM +0800, Wanpeng Li wrote: > 2016-07-06 20:28 GMT+08:00 Paolo Bonzini <pbonzini at redhat.com>: > > Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to > > indicate that pad[0] is a "VCPU preempted" field; if pad[0] is 1, the > > VCPU has been scheduled out since the last time the guest reset the bit. > > The guest can use an xchg to test-and-clear it. The bit can be > > accessed at any time, independent of the version field. > > If one vCPU is preemp...

On Thu, Jul 07, 2016 at 04:48:05PM +0800, Wanpeng Li wrote: > 2016-07-06 20:28 GMT+08:00 Paolo Bonzini <pbonzini at redhat.com>: > > Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to > > indicate that pad[0] is a "VCPU preempted" field; if pad[0] is 1, the > > VCPU has been scheduled out since the last time the guest reset the bit. > > The guest can use an xchg to test-and-clear it. The bit can be > > accessed at any time, independent of the version field. > > If one vCPU is preemp...

...ls, and can only run 64bit guest kernels. However, running 31bit applications in guest userspace is possible. The following source files are introduced by this patch arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all arch callbacks for kvm. __vcpu_run calls back into sie64a to enter the guest machine context arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest context via SIE, and switches world before and after that include/asm-s390/kvm_h...

...ls, and can only run 64bit guest kernels. However, running 31bit applications in guest userspace is possible. The following source files are introduced by this patch arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all arch callbacks for kvm. __vcpu_run calls back into sie64a to enter the guest machine context arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest context via SIE, and switches world before and after that include/asm-s390/kvm_h...

...C??u <ncitu at bitdefender.com> > > This would be used either if the introspection tool request it as a > reply to a KVMI_EVENT_PF event or to cope with instructions that cannot > be handled by the x86 emulator during the handling of a VMEXIT. In > these situations, all other vCPU-s are kicked and held, the EPT-based > protection is removed and the guest is single stepped by the vCPU that > triggered the initial VMEXIT. Upon completion the EPT-base protection > is reinstalled and all vCPU-s all allowed to return to the guest. > > This is a rather slow workaro...

From: Nicu?or C??u <ncitu at bitdefender.com> This function is needed for the KVMI_VCPU_INJECT_EXCEPTION command. Signed-off-by: Nicu?or C??u <ncitu at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/x86.c | 53 +++++++++++++++++++-------------- 2 files changed, 32 insertions...

From: Nicu?or C??u <ncitu at bitdefender.com> This function is needed for the KVMI_VCPU_INJECT_EXCEPTION command. Signed-off-by: Nicu?or C??u <ncitu at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/x86.c | 71 ++++++++++++++++++--------------- 2 files changed, 39 insertions...

...' /><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='1' /><vcpupin vcpu='2' cpuset='2' /><vcpupin vcpu='3' cpuset='3' /><vcpupin vcpu='4' cpuset='4' /><vcpupin vcpu='5' cpuset='5&...

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

...U(s): 24-27 NUMA node7 CPU(s): 28-31 This is virtual node configuration: (i tried different numatune settings but it was still the same) <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <name>one-55782</name> <vcpu><![CDATA[32]]></vcpu> <cputune> <shares>32768</shares> </cputune> <memory>507904000</memory> <os> <type arch='x86_64'>hvm</type> </os> &...

2016-10-24 16:39+0200, Paolo Bonzini: > On 19/10/2016 19:24, Radim Kr?m?? wrote: >>> > + if (vcpu->arch.st.msr_val & KVM_MSR_ENABLED) >>> > + if (kvm_read_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, >>> > + &vcpu->arch.st.steal, >>> > + sizeof(struct kvm_steal_time)) == 0) { >>> > + vcpu->arch.st.steal.preem...