diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 5 | ||||
| -rw-r--r-- | Documentation/virtual/lguest/Makefile | 2 | ||||
| -rw-r--r-- | Documentation/virtual/lguest/lguest.c | 22 |
3 files changed, 7 insertions, 22 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 5438a2d7907f..d9a203b058f1 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -999,7 +999,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. With this option on every unmap_single operation will result in a hardware IOTLB flush operation as opposed to batching them for performance. - + sp_off [Default Off] + By default, super page will be supported if Intel IOMMU + has the capability. With this option, super page will + not be supported. intremap= [X86-64, Intel-IOMMU] Format: { on (default) | off | nosid } on enable Interrupt Remapping (default) diff --git a/Documentation/virtual/lguest/Makefile b/Documentation/virtual/lguest/Makefile index bebac6b4f332..0ac34206f7a7 100644 --- a/Documentation/virtual/lguest/Makefile +++ b/Documentation/virtual/lguest/Makefile @@ -1,5 +1,5 @@ # This creates the demonstration utility "lguest" which runs a Linux guest. -# Missing headers? Add "-I../../include -I../../arch/x86/include" +# Missing headers? Add "-I../../../include -I../../../arch/x86/include" CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE all: lguest diff --git a/Documentation/virtual/lguest/lguest.c b/Documentation/virtual/lguest/lguest.c index d9da7e148538..cd9d6af61d07 100644 --- a/Documentation/virtual/lguest/lguest.c +++ b/Documentation/virtual/lguest/lguest.c @@ -49,7 +49,7 @@ #include <linux/virtio_rng.h> #include <linux/virtio_ring.h> #include <asm/bootparam.h> -#include "../../include/linux/lguest_launcher.h" +#include "../../../include/linux/lguest_launcher.h" /*L:110 * We can ignore the 42 include files we need for this program, but I do want * to draw attention to the use of kernel-style types. @@ -135,9 +135,6 @@ struct device { /* Is it operational */ bool running; - /* Does Guest want an intrrupt on empty? */ - bool irq_on_empty; - /* Device-specific data. */ void *priv; }; @@ -637,10 +634,7 @@ static void trigger_irq(struct virtqueue *vq) /* If they don't want an interrupt, don't send one... */ if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) { - /* ... unless they've asked us to force one on empty. */ - if (!vq->dev->irq_on_empty - || lg_last_avail(vq) != vq->vring.avail->idx) - return; + return; } /* Send the Guest an interrupt tell them we used something up. */ @@ -1057,15 +1051,6 @@ static void create_thread(struct virtqueue *vq) close(vq->eventfd); } -static bool accepted_feature(struct device *dev, unsigned int bit) -{ - const u8 *features = get_feature_bits(dev) + dev->feature_len; - - if (dev->feature_len < bit / CHAR_BIT) - return false; - return features[bit / CHAR_BIT] & (1 << (bit % CHAR_BIT)); -} - static void start_device(struct device *dev) { unsigned int i; @@ -1079,8 +1064,6 @@ static void start_device(struct device *dev) verbose(" %02x", get_feature_bits(dev) [dev->feature_len+i]); - dev->irq_on_empty = accepted_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY); - for (vq = dev->vq; vq; vq = vq->next) { if (vq->service) create_thread(vq); @@ -1564,7 +1547,6 @@ static void setup_tun_net(char *arg) /* Set up the tun device. */ configure_device(ipfd, tapif, ip); - add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY); /* Expect Guest to handle everything except UFO */ add_feature(dev, VIRTIO_NET_F_CSUM); add_feature(dev, VIRTIO_NET_F_GUEST_CSUM); |