search for: vhost_get_vring_busyloop_timeout

...v *d, int ioctl, void __user *argp) case VHOST_GET_VRING_ENDIAN: r = vhost_get_vring_endian(vq, idx, argp); break; + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: + if (copy_from_user(&s, argp, sizeof(s))) { + r = -EFAULT; + break; + } + vq->busyloop_timeout = s.num; + break; + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: + s.index = idx; + s.num = vq->busyloop_timeout; + if (copy_to_user(argp, &s, sizeof(s))) + r = -EFAULT; + break; default: r = -ENOIOCTLCMD; } diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index a7a43f0..9a02158 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhos...

..., int ioctl, void __user *argp) case VHOST_GET_VRING_ENDIAN: r = vhost_get_vring_endian(vq, idx, argp); break; + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: + if (copy_from_user(&t, argp, sizeof(t))) { + r = -EFAULT; + break; + } + vq->busyloop_timeout = t.timeout; + break; + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: + t.index = idx; + t.timeout = vq->busyloop_timeout; + if (copy_to_user(argp, &t, sizeof(t))) + r = -EFAULT; + break; default: r = -ENOIOCTLCMD; } diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 2f3c57c..4b7d4fa 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/...

...RING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&t, argp, sizeof(t))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = t.timeout; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + t.index = idx; > + t.timeout = vq->busyloop_timeout; > + if (copy_to_user(argp, &t, sizeof(t))) > + r = -EFAULT; > + break; > default: > r = -ENOIOCTLCMD; > } > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index 2f3c57c..4b7d4fa...

...RING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&t, argp, sizeof(t))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = t.timeout; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + t.index = idx; > + t.timeout = vq->busyloop_timeout; > + if (copy_to_user(argp, &t, sizeof(t))) > + r = -EFAULT; > + break; > default: > r = -ENOIOCTLCMD; > } > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index 2f3c57c..4b7d4fa...

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

...ET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&s, argp, sizeof(s))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = s.num; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + s.index = idx; > + s.num = vq->busyloop_timeout; > + if (copy_to_user(argp, &s, sizeof(s))) > + r = -EFAULT; > + break; > default: > r = -ENOIOCTLCMD; > } > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index a7a43f0..9a02158 100...

...ET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&s, argp, sizeof(s))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = s.num; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + s.index = idx; > + s.num = vq->busyloop_timeout; > + if (copy_to_user(argp, &s, sizeof(s))) > + r = -EFAULT; > + break; > default: > r = -ENOIOCTLCMD; > } > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index a7a43f0..9a02158 100...

...@ struct vhost_msg { }; }; +struct vhost_msg_v2 { + int type; + __u32 reserved; + union { + struct vhost_iotlb_msg iotlb; + __u8 padding[64]; + }; +}; + struct vhost_memory_region { __u64 guest_phys_addr; __u64 memory_size; /* bytes */ @@ -160,6 +170,14 @@ struct vhost_memory { #define VHOST_GET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x24, \ struct vhost_vring_state) +/* Set or get vhost backend capability */ + +/* Use message type V2 */ +#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 + +#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) +#define VHOST_GET_BACKEND_FEATURES _IOW(VHOST_VIRTIO...

...@ struct vhost_msg { }; }; +struct vhost_msg_v2 { + int type; + __u32 reserved; + union { + struct vhost_iotlb_msg iotlb; + __u8 padding[64]; + }; +}; + struct vhost_memory_region { __u64 guest_phys_addr; __u64 memory_size; /* bytes */ @@ -160,6 +170,14 @@ struct vhost_memory { #define VHOST_GET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x24, \ struct vhost_vring_state) +/* Set or get vhost backend capability */ + +/* Use message type V2 */ +#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 + +#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) +#define VHOST_GET_BACKEND_FEATURES _IOW(VHOST_VIRTIO...

...type; > + __u32 reserved; > + union { > + struct vhost_iotlb_msg iotlb; > + __u8 padding[64]; > + }; > +}; > + > struct vhost_memory_region { > __u64 guest_phys_addr; > __u64 memory_size; /* bytes */ > @@ -160,6 +170,14 @@ struct vhost_memory { > #define VHOST_GET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x24, \ > struct vhost_vring_state) > > +/* Set or get vhost backend capability */ > + > +/* Use message type V2 */ > +#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 > + > +#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) > +#define...

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

...struct vhost_msg { }; }; +struct vhost_msg_v2 { + __u32 type; + __u32 reserved; + union { + struct vhost_iotlb_msg iotlb; + __u8 padding[64]; + }; +}; + struct vhost_memory_region { __u64 guest_phys_addr; __u64 memory_size; /* bytes */ @@ -160,6 +170,14 @@ struct vhost_memory { #define VHOST_GET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x24, \ struct vhost_vring_state) +/* Set or get vhost backend capability */ + +/* Use message type V2 */ +#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 + +#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) +#define VHOST_GET_BACKEND_FEATURES _IOW(VHOST_VIRTIO...

...g 2016-03-04 1621 break; 03088137246065 Jason Wang 2016-03-04 1622 } 03088137246065 Jason Wang 2016-03-04 1623 vq->busyloop_timeout = s.num; 03088137246065 Jason Wang 2016-03-04 1624 break; 03088137246065 Jason Wang 2016-03-04 1625 case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: 03088137246065 Jason Wang 2016-03-04 1626 s.index = idx; 03088137246065 Jason Wang 2016-03-04 1627 s.num = vq->busyloop_timeout; 03088137246065 Jason Wang 2016-03-04 1628 if (copy_to_user(argp, &s, sizeof(s))) 03088137246065 Jason Wang 2016-03-04...

We try to keep the defconfig untouched after decoupling CONFIG_VHOST out of CONFIG_VIRTUALIZATION in commit 20c384f1ea1a ("vhost: refine vhost and vringh kconfig") by enabling VHOST_MENU by default. Then the defconfigs can keep enabling CONFIG_VHOST_NET without the caring of CONFIG_VHOST. But this will leave a "CONFIG_VHOST_MENU=y" in all defconfigs and even for the ones that