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vfio: Pass an Error object to vfio_connect_container

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The error is currently simply reported in vfio_get_group. Don't
bother too much with the prefix which will be handled at upper level,
later on.

Also return an error value in case container->error is not 0 and
the container is teared down.

On vfio_spapr_remove_window failure, we also report an error whereas
it was silent before.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Auger 2016-10-17 10:57:59 -06:00 committed by Alex Williamson
parent 7237011d05
commit 01905f58f1
1 changed files with 25 additions and 15 deletions
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40
hw/vfio/common.c
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@ -34,6 +34,7 @@
#include "qemu/range.h"
#include "sysemu/kvm.h"
#include "trace.h"
#include "qapi/error.h"
struct vfio_group_head vfio_group_list =
QLIST_HEAD_INITIALIZER(vfio_group_list);
@ -900,7 +901,8 @@ static void vfio_put_address_space(VFIOAddressSpace *space)
}
}
static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
Error **errp)
{
VFIOContainer *container;
int ret, fd;
@ -918,15 +920,15 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
fd = qemu_open("/dev/vfio/vfio", O_RDWR);
if (fd < 0) {
error_report("vfio: failed to open /dev/vfio/vfio: %m");
error_setg_errno(errp, errno, "failed to open /dev/vfio/vfio");
ret = -errno;
goto put_space_exit;
}
ret = ioctl(fd, VFIO_GET_API_VERSION);
if (ret != VFIO_API_VERSION) {
error_report("vfio: supported vfio version: %d, "
"reported version: %d", VFIO_API_VERSION, ret);
error_setg(errp, "supported vfio version: %d, "
"reported version: %d", VFIO_API_VERSION, ret);
ret = -EINVAL;
goto close_fd_exit;
}
@ -941,7 +943,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
ret = ioctl(group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
if (ret) {
error_report("vfio: failed to set group container: %m");
error_setg_errno(errp, errno, "failed to set group container");
ret = -errno;
goto free_container_exit;
}
@ -949,7 +951,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
container->iommu_type = v2 ? VFIO_TYPE1v2_IOMMU : VFIO_TYPE1_IOMMU;
ret = ioctl(fd, VFIO_SET_IOMMU, container->iommu_type);
if (ret) {
error_report("vfio: failed to set iommu for container: %m");
error_setg_errno(errp, errno, "failed to set iommu for container");
ret = -errno;
goto free_container_exit;
}
@ -976,7 +978,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
ret = ioctl(group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
if (ret) {
error_report("vfio: failed to set group container: %m");
error_setg_errno(errp, errno, "failed to set group container");
ret = -errno;
goto free_container_exit;
}
@ -984,7 +986,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
v2 ? VFIO_SPAPR_TCE_v2_IOMMU : VFIO_SPAPR_TCE_IOMMU;
ret = ioctl(fd, VFIO_SET_IOMMU, container->iommu_type);
if (ret) {
error_report("vfio: failed to set iommu for container: %m");
error_setg_errno(errp, errno, "failed to set iommu for container");
ret = -errno;
goto free_container_exit;
}
@ -997,7 +999,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
if (!v2) {
ret = ioctl(fd, VFIO_IOMMU_ENABLE);
if (ret) {
error_report("vfio: failed to enable container: %m");
error_setg_errno(errp, errno, "failed to enable container");
ret = -errno;
goto free_container_exit;
}
@ -1008,7 +1010,9 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
&address_space_memory);
if (container->error) {
memory_listener_unregister(&container->prereg_listener);
error_report("vfio: RAM memory listener initialization failed for container");
ret = container->error;
error_setg(errp,
"RAM memory listener initialization failed for container");
goto free_container_exit;
}
}
@ -1016,7 +1020,8 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
info.argsz = sizeof(info);
ret = ioctl(fd, VFIO_IOMMU_SPAPR_TCE_GET_INFO, &info);
if (ret) {
error_report("vfio: VFIO_IOMMU_SPAPR_TCE_GET_INFO failed: %m");
error_setg_errno(errp, errno,
"VFIO_IOMMU_SPAPR_TCE_GET_INFO failed");
ret = -errno;
if (v2) {
memory_listener_unregister(&container->prereg_listener);
@ -1033,6 +1038,8 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
*/
ret = vfio_spapr_remove_window(container, info.dma32_window_start);
if (ret) {
error_setg_errno(errp, -ret,
"failed to remove existing window");
goto free_container_exit;
}
} else {
@ -1043,7 +1050,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
0x1000);
}
} else {
error_report("vfio: No available IOMMU models");
error_setg(errp, "No available IOMMU models");
ret = -EINVAL;
goto free_container_exit;
}
@ -1054,7 +1061,8 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
if (container->error) {
ret = container->error;
error_report("vfio: memory listener initialization failed for container");
error_setg_errno(errp, -ret,
"memory listener initialization failed for container");
goto listener_release_exit;
}
@ -1120,6 +1128,7 @@ VFIOGroup *vfio_get_group(int groupid, AddressSpace *as)
VFIOGroup *group;
char path[32];
struct vfio_group_status status = { .argsz = sizeof(status) };
Error *err = NULL;
QLIST_FOREACH(group, &vfio_group_list, next) {
if (group->groupid == groupid) {
@ -1158,8 +1167,9 @@ VFIOGroup *vfio_get_group(int groupid, AddressSpace *as)
group->groupid = groupid;
QLIST_INIT(&group->device_list);
if (vfio_connect_container(group, as)) {
error_report("vfio: failed to setup container for group %d", groupid);
if (vfio_connect_container(group, as, &err)) {
error_reportf_err(err, "vfio: failed to setup container for group %d",
groupid);
goto close_fd_exit;
}