search for: u8_pad

.../kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h index 94dc8ca..1421a65 100644 --- a/arch/x86/include/uapi/asm/kvm_para.h +++ b/arch/x86/include/uapi/asm/kvm_para.h @@ -45,7 +45,9 @@ struct kvm_steal_time { __u64 steal; __u32 version; __u32 flags; - __u32 pad[12]; + __u8 preempted; + __u8 u8_pad[3]; + __u32 pad[11]; }; #define KVM_STEAL_ALIGNMENT_BITS 5 diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e375235..f06e115 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2057,6 +2057,8 @@ static void record_steal_time(struct kvm_vcpu *vcpu) &vcpu->arch.st.ste...

...T_IOTLB_INVALIDATE 3 > >> + __u8 type; > >> +#define VHOST_IOTLB_INVALID 0x1 > >> +#define VHOST_IOTLB_VALID 0x2 > >> + __u8 valid; > > why do we need this flag? > > Useless, will remove. > > > > >> + __u8 u8_padding; > >> + __u32 padding; > >> + } flags; > >> +}; > >> + > >> +struct vhost_vring_iotlb_entry { > >> + unsigned int index; > >> + __u64 userspace_addr; > >> +}; > >> + > >> struct vhost_memory_region { &gt...

...T_IOTLB_INVALIDATE 3 > >> + __u8 type; > >> +#define VHOST_IOTLB_INVALID 0x1 > >> +#define VHOST_IOTLB_VALID 0x2 > >> + __u8 valid; > > why do we need this flag? > > Useless, will remove. > > > > >> + __u8 u8_padding; > >> + __u32 padding; > >> + } flags; > >> +}; > >> + > >> +struct vhost_vring_iotlb_entry { > >> + unsigned int index; > >> + __u64 userspace_addr; > >> +}; > >> + > >> struct vhost_memory_region { &gt...

...HOST_IOTLB_UPDATE 2 >> +#define VHOST_IOTLB_INVALIDATE 3 >> + __u8 type; >> +#define VHOST_IOTLB_INVALID 0x1 >> +#define VHOST_IOTLB_VALID 0x2 >> + __u8 valid; > why do we need this flag? Useless, will remove. > >> + __u8 u8_padding; >> + __u32 padding; >> + } flags; >> +}; >> + >> +struct vhost_vring_iotlb_entry { >> + unsigned int index; >> + __u64 userspace_addr; >> +}; >> + >> struct vhost_memory_region { >> __u64 guest_phys_addr; >> __u64 me...

...t; +#define VHOST_IOTLB_MISS 1 > +#define VHOST_IOTLB_UPDATE 2 > +#define VHOST_IOTLB_INVALIDATE 3 > + __u8 type; > +#define VHOST_IOTLB_INVALID 0x1 > +#define VHOST_IOTLB_VALID 0x2 > + __u8 valid; why do we need this flag? > + __u8 u8_padding; > + __u32 padding; > + } flags; > +}; > + > +struct vhost_vring_iotlb_entry { > + unsigned int index; > + __u64 userspace_addr; > +}; > + > struct vhost_memory_region { > __u64 guest_phys_addr; > __u64 memory_size; /* bytes */ > @@ -127,6 +153,15 @@...

...t; +#define VHOST_IOTLB_MISS 1 > +#define VHOST_IOTLB_UPDATE 2 > +#define VHOST_IOTLB_INVALIDATE 3 > + __u8 type; > +#define VHOST_IOTLB_INVALID 0x1 > +#define VHOST_IOTLB_VALID 0x2 > + __u8 valid; why do we need this flag? > + __u8 u8_padding; > + __u32 padding; > + } flags; > +}; > + > +struct vhost_vring_iotlb_entry { > + unsigned int index; > + __u64 userspace_addr; > +}; > + > struct vhost_memory_region { > __u64 guest_phys_addr; > __u64 memory_size; /* bytes */ > @@ -127,6 +153,15 @@...

...NVALIDATE 3 >>>> + __u8 type; >>>> +#define VHOST_IOTLB_INVALID 0x1 >>>> +#define VHOST_IOTLB_VALID 0x2 >>>> + __u8 valid; >>> why do we need this flag? >> Useless, will remove. >> >>>> + __u8 u8_padding; >>>> + __u32 padding; >>>> + } flags; >>>> +}; >>>> + >>>> +struct vhost_vring_iotlb_entry { >>>> + unsigned int index; >>>> + __u64 userspace_addr; >>>> +}; >>>> + >>>> st...

...0x1 +#define VHOST_IOTLB_PERM_WRITE 0x10 + __u8 perm; +#define VHOST_IOTLB_MISS 1 +#define VHOST_IOTLB_UPDATE 2 +#define VHOST_IOTLB_INVALIDATE 3 + __u8 type; +#define VHOST_IOTLB_INVALID 0x1 +#define VHOST_IOTLB_VALID 0x2 + __u8 valid; + __u8 u8_padding; + __u32 padding; + } flags; +}; + /* ioctls */ #define VHOST_VIRTIO 0xAF @@ -127,6 +147,12 @@ struct vhost_memory { /* Set eventfd to signal an error */ #define VHOST_SET_VRING_ERR _IOW(VHOST_VIRTIO, 0x22, struct vhost_vring_file) +/* IOTLB */ +/* Specify an eventfd file descriptor to...

...0x1 +#define VHOST_IOTLB_PERM_WRITE 0x10 + __u8 perm; +#define VHOST_IOTLB_MISS 1 +#define VHOST_IOTLB_UPDATE 2 +#define VHOST_IOTLB_INVALIDATE 3 + __u8 type; +#define VHOST_IOTLB_INVALID 0x1 +#define VHOST_IOTLB_VALID 0x2 + __u8 valid; + __u8 u8_padding; + __u32 padding; + } flags; +}; + /* ioctls */ #define VHOST_VIRTIO 0xAF @@ -127,6 +147,12 @@ struct vhost_memory { /* Set eventfd to signal an error */ #define VHOST_SET_VRING_ERR _IOW(VHOST_VIRTIO, 0x22, struct vhost_vring_file) +/* IOTLB */ +/* Specify an eventfd file descriptor to...

...0x10 > + __u8 perm; > +#define VHOST_IOTLB_MISS 1 > +#define VHOST_IOTLB_UPDATE 2 > +#define VHOST_IOTLB_INVALIDATE 3 > + __u8 type; > +#define VHOST_IOTLB_INVALID 0x1 > +#define VHOST_IOTLB_VALID 0x2 > + __u8 valid; > + __u8 u8_padding; > + __u32 padding; > + } flags; > +}; > + > /* ioctls */ > > #define VHOST_VIRTIO 0xAF > @@ -127,6 +147,12 @@ struct vhost_memory { > /* Set eventfd to signal an error */ > #define VHOST_SET_VRING_ERR _IOW(VHOST_VIRTIO, 0x22, struct vhost_vring_file) >...

change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc,

change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc,

...CESS_WO 0x2 +#define VHOST_ACCESS_RW 0x3 + __u8 perm; +#define VHOST_IOTLB_MISS 1 +#define VHOST_IOTLB_UPDATE 2 +#define VHOST_IOTLB_INVALIDATE 3 + __u8 type; +#define VHOST_IOTLB_INVALID 0x1 +#define VHOST_IOTLB_VALID 0x2 + __u8 valid; + __u8 u8_padding; + __u32 padding; + } flags; +}; + +struct vhost_vring_iotlb_entry { + unsigned int index; + __u64 userspace_addr; +}; + struct vhost_memory_region { __u64 guest_phys_addr; __u64 memory_size; /* bytes */ @@ -127,6 +153,15 @@ struct vhost_memory { /* Set eventfd to signal an error */ #de...

change from v6: fix typos and remove uncessary comments. change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3:

change from v6: fix typos and remove uncessary comments. change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3:

change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code

change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace(qemu) implementation of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace(qemu) implementation of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This