motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vfio/iommufd: Implement VFIOIOMMUClass::query_dirty_bitmap support

Browse source 
ioctl(iommufd, IOMMU_HWPT_GET_DIRTY_BITMAP, arg) is the UAPI
that fetches the bitmap that tells what was dirty in an IOVA
range.

A single bitmap is allocated and used across all the hwpts
sharing an IOAS which is then used in log_sync() to set Qemu
global bitmaps.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
This commit is contained in:
Joao Martins 2024-07-22 22:13:24 +01:00 • committed by Cédric Le Goater
parent 52ce88229c
commit 7c30710bd9
4 changed files with 62 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

29
backends/iommufd.c
View file

@ -261,6 +261,35 @@ bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be,
return true;
}
bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be,
uint32_t hwpt_id,
uint64_t iova, ram_addr_t size,
uint64_t page_size, uint64_t *data,
Error **errp)
{
int ret;
struct iommu_hwpt_get_dirty_bitmap get_dirty_bitmap = {
.size = sizeof(get_dirty_bitmap),
.hwpt_id = hwpt_id,
.iova = iova,
.length = size,
.page_size = page_size,
.data = (uintptr_t)data,
};
ret = ioctl(be->fd, IOMMU_HWPT_GET_DIRTY_BITMAP, &get_dirty_bitmap);
trace_iommufd_backend_get_dirty_bitmap(be->fd, hwpt_id, iova, size,
page_size, ret ? errno : 0);
if (ret) {
error_setg_errno(errp, errno,
"IOMMU_HWPT_GET_DIRTY_BITMAP (iova: 0x%"HWADDR_PRIx
" size: 0x"RAM_ADDR_FMT") failed", iova, size);
return false;
}
return true;
}
bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
uint32_t *type, void *data, uint32_t len,
uint64_t *caps, Error **errp)

1
backends/trace-events
View file

@ -17,3 +17,4 @@ iommufd_backend_alloc_ioas(int iommufd, uint32_t ioas) " iommufd=%d ioas=%d"
iommufd_backend_alloc_hwpt(int iommufd, uint32_t dev_id, uint32_t pt_id, uint32_t flags, uint32_t hwpt_type, uint32_t len, uint64_t data_ptr, uint32_t out_hwpt_id, int ret) " iommufd=%d dev_id=%u pt_id=%u flags=0x%x hwpt_type=%u len=%u data_ptr=0x%"PRIx64" out_hwpt=%u (%d)"
iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (%d)"
iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)"
iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, uint64_t size, uint64_t page_size, int ret) " iommufd=%d hwpt=%u iova=0x%"PRIx64" size=0x%"PRIx64" page_size=0x%"PRIx64" (%d)"