| Message ID | 20240306133441.2351700-24-clg@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | migration: Improve error reporting | expand |
On 3/6/24 14:34, Cédric Le Goater wrote: > Let the callers do the error reporting. Add documentation while at it. > > Signed-off-by: Cédric Le Goater <clg@redhat.com> > --- > include/hw/vfio/vfio-common.h | 4 +- > include/hw/vfio/vfio-container-base.h | 17 +++++++- > hw/vfio/common.c | 59 ++++++++++++++++++--------- > hw/vfio/container-base.c | 5 ++- > hw/vfio/container.c | 13 +++--- > 5 files changed, 67 insertions(+), 31 deletions(-) > > diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h > index 46f88493634b5634a9c14a5caa33a463fbf2c50d..68911d36676667352e94a97895828aff4b194b57 100644 > --- a/include/hw/vfio/vfio-common.h > +++ b/include/hw/vfio/vfio-common.h > @@ -274,9 +274,9 @@ bool > vfio_devices_all_device_dirty_tracking(const VFIOContainerBase *bcontainer); > int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, hwaddr iova, > - hwaddr size); > + hwaddr size, Error **errp); > int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, > - uint64_t size, ram_addr_t ram_addr); > + uint64_t size, ram_addr_t ram_addr, Error **errp); > > /* Returns 0 on success, or a negative errno. */ > int vfio_device_get_name(VFIODevice *vbasedev, Error **errp); > diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h > index c76984654a596e3016a8cf833e10143eb872e102..ebc49ebfbe7de862450941b1129faad5d62b3769 100644 > --- a/include/hw/vfio/vfio-container-base.h > +++ b/include/hw/vfio/vfio-container-base.h > @@ -85,7 +85,7 @@ int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, > bool start, Error **errp); > int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, > - hwaddr iova, hwaddr size); > + hwaddr iova, hwaddr size, Error **errp); > > void vfio_container_init(VFIOContainerBase *bcontainer, > VFIOAddressSpace *space, > @@ -138,9 +138,22 @@ struct VFIOIOMMUClass { > */ > int (*set_dirty_page_tracking)(const VFIOContainerBase *bcontainer, > bool start, Error **errp); > + /** > + * @query_dirty_bitmap > + * > + * Get list of dirty pages from container > + * > + * @bcontainer: #VFIOContainerBase from which to get dirty pages > + * @vbmap: #VFIOBitmap internal bitmap structure > + * @iova: iova base address > + * @size: size of iova range > + * @errp: pointer to Error*, to store an error if it happens. > + * > + * Returns zero to indicate success and negative for error > + */ > int (*query_dirty_bitmap)(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, > - hwaddr iova, hwaddr size); > + hwaddr iova, hwaddr size, Error **errp); > /* PCI specific */ > int (*pci_hot_reset)(VFIODevice *vbasedev, bool single); > > diff --git a/hw/vfio/common.c b/hw/vfio/common.c > index 496e5adaf8f18e9ae7e86dd69be0b9e71e86404f..65a11dc088524647541db97b7b8d6f07e5044728 100644 > --- a/hw/vfio/common.c > +++ b/hw/vfio/common.c > @@ -1158,7 +1158,7 @@ static int vfio_device_dma_logging_report(VFIODevice *vbasedev, hwaddr iova, > > int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, hwaddr iova, > - hwaddr size) > + hwaddr size, Error **errp) > { > VFIODevice *vbasedev; > int ret; > @@ -1167,10 +1167,10 @@ int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > ret = vfio_device_dma_logging_report(vbasedev, iova, size, > vbmap->bitmap); > if (ret) { > - error_report("%s: Failed to get DMA logging report, iova: " > - "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx > - ", err: %d (%s)", > - vbasedev->name, iova, size, ret, strerror(-ret)); > + error_setg(errp, "%s: Failed to get DMA logging report, iova: " > + "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx > + ", err: %d (%s)", > + vbasedev->name, iova, size, ret, strerror(-ret)); use error_setg_errno as below? > > return ret; > } > @@ -1180,7 +1180,7 @@ int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > } > > int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, > - uint64_t size, ram_addr_t ram_addr) > + uint64_t size, ram_addr_t ram_addr, Error **errp) > { > bool all_device_dirty_tracking = > vfio_devices_all_device_dirty_tracking(bcontainer); > @@ -1197,13 +1197,17 @@ int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, > > ret = vfio_bitmap_alloc(&vbmap, size); > if (ret) { > + error_setg_errno(errp, -ret, > + "Failed to allocate dirty tracking bitmap"); > return ret; > } > > if (all_device_dirty_tracking) { > - ret = vfio_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size); > + ret = vfio_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size, > + errp); > } else { > - ret = vfio_container_query_dirty_bitmap(bcontainer, &vbmap, iova, size); > + ret = vfio_container_query_dirty_bitmap(bcontainer, &vbmap, iova, size, > + errp); > } > > if (ret) { > @@ -1251,12 +1255,13 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) > } > > ret = vfio_get_dirty_bitmap(bcontainer, iova, iotlb->addr_mask + 1, > - translated_addr); > + translated_addr, &local_err); > if (ret) { > - error_report("vfio_iommu_map_dirty_notify(%p, 0x%"HWADDR_PRIx", " > - "0x%"HWADDR_PRIx") = %d (%s)", > - bcontainer, iova, iotlb->addr_mask + 1, ret, > - strerror(-ret)); > + error_prepend(&local_err, > + "vfio_iommu_map_dirty_notify(%p, 0x%"HWADDR_PRIx", " > + "0x%"HWADDR_PRIx") failed :", bcontainer, iova, nit in previous prepends you used "-" instead of ":" at the end. Maybe align. > + iotlb->addr_mask + 1); > + error_report_err(local_err); > } > > out_lock: > @@ -1276,12 +1281,19 @@ static int vfio_ram_discard_get_dirty_bitmap(MemoryRegionSection *section, > const ram_addr_t ram_addr = memory_region_get_ram_addr(section->mr) + > section->offset_within_region; > VFIORamDiscardListener *vrdl = opaque; > + Error *local_err = NULL; > + int ret; > > /* > * Sync the whole mapped region (spanning multiple individual mappings) > * in one go. > */ > - return vfio_get_dirty_bitmap(vrdl->bcontainer, iova, size, ram_addr); > + ret = vfio_get_dirty_bitmap(vrdl->bcontainer, iova, size, ram_addr, > + &local_err); > + if (ret) { > + error_report_err(local_err); > + } > + return ret; > } > > static int > @@ -1313,7 +1325,7 @@ vfio_sync_ram_discard_listener_dirty_bitmap(VFIOContainerBase *bcontainer, > } > > static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, > - MemoryRegionSection *section) > + MemoryRegionSection *section, Error **errp) > { > ram_addr_t ram_addr; > > @@ -1344,7 +1356,14 @@ static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, > } > return 0; > } else if (memory_region_has_ram_discard_manager(section->mr)) { > - return vfio_sync_ram_discard_listener_dirty_bitmap(bcontainer, section); > + int ret; > + > + ret = vfio_sync_ram_discard_listener_dirty_bitmap(bcontainer, section); > + if (ret) { > + error_setg(errp, > + "Failed to sync dirty bitmap with RAM discard listener"); > + return ret; > + } > } > > ram_addr = memory_region_get_ram_addr(section->mr) + > @@ -1352,7 +1371,7 @@ static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, > > return vfio_get_dirty_bitmap(bcontainer, > REAL_HOST_PAGE_ALIGN(section->offset_within_address_space), > - int128_get64(section->size), ram_addr); > + int128_get64(section->size), ram_addr, errp); > } > > static void vfio_listener_log_sync(MemoryListener *listener, > @@ -1361,16 +1380,16 @@ static void vfio_listener_log_sync(MemoryListener *listener, > VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase, > listener); > int ret; > + Error *local_err = NULL; > > if (vfio_listener_skipped_section(section)) { > return; > } > > if (vfio_devices_all_dirty_tracking(bcontainer)) { > - ret = vfio_sync_dirty_bitmap(bcontainer, section); > + ret = vfio_sync_dirty_bitmap(bcontainer, section, &local_err); > if (ret) { > - error_report("vfio: Failed to sync dirty bitmap, err: %d (%s)", ret, > - strerror(-ret)); > + error_report_err(local_err); > vfio_set_migration_error(ret); > } > } > diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c > index 7c0764121d24b02b6c4e66e368d7dff78a6d65aa..8db59881873c3b1edee81104b966af737e5fa6f6 100644 > --- a/hw/vfio/container-base.c > +++ b/hw/vfio/container-base.c > @@ -65,10 +65,11 @@ int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, > > int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, > - hwaddr iova, hwaddr size) > + hwaddr iova, hwaddr size, Error **errp) > { > g_assert(bcontainer->ops->query_dirty_bitmap); > - return bcontainer->ops->query_dirty_bitmap(bcontainer, vbmap, iova, size); > + return bcontainer->ops->query_dirty_bitmap(bcontainer, vbmap, iova, size, > + errp); > } > > void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space, > diff --git a/hw/vfio/container.c b/hw/vfio/container.c > index 6524575aeddcea8470b5fd10caf57475088d1813..475d96eaaa927998c6aa8cc9aa9f2115f5a1efda 100644 > --- a/hw/vfio/container.c > +++ b/hw/vfio/container.c > @@ -131,6 +131,7 @@ static int vfio_legacy_dma_unmap(const VFIOContainerBase *bcontainer, > }; > bool need_dirty_sync = false; > int ret; > + Error *local_err = NULL; > > if (iotlb && vfio_devices_all_running_and_mig_active(bcontainer)) { > if (!vfio_devices_all_device_dirty_tracking(bcontainer) && > @@ -166,8 +167,9 @@ static int vfio_legacy_dma_unmap(const VFIOContainerBase *bcontainer, > > if (need_dirty_sync) { > ret = vfio_get_dirty_bitmap(bcontainer, iova, size, > - iotlb->translated_addr); > + iotlb->translated_addr, &local_err); > if (ret) { > + error_report_err(local_err); > return ret; > } > } > @@ -237,7 +239,8 @@ vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer, > > static int vfio_legacy_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > VFIOBitmap *vbmap, > - hwaddr iova, hwaddr size) > + hwaddr iova, hwaddr size, > + Error **errp) > { > const VFIOContainer *container = container_of(bcontainer, VFIOContainer, > bcontainer); > @@ -265,9 +268,9 @@ static int vfio_legacy_query_dirty_bitmap(const VFIOContainerBase *bcontainer, > ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, dbitmap); > if (ret) { > ret = -errno; > - error_report("Failed to get dirty bitmap for iova: 0x%"PRIx64 > - " size: 0x%"PRIx64" err: %d", (uint64_t)range->iova, > - (uint64_t)range->size, errno); > + error_setg(errp, "Failed to get dirty bitmap for iova: 0x%"PRIx64 > + " size: 0x%"PRIx64" err: %d", (uint64_t)range->iova, > + (uint64_t)range->size, errno); use errno flavour? Eric > } > > g_free(dbitmap);
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 46f88493634b5634a9c14a5caa33a463fbf2c50d..68911d36676667352e94a97895828aff4b194b57 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -274,9 +274,9 @@ bool vfio_devices_all_device_dirty_tracking(const VFIOContainerBase *bcontainer); int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, hwaddr iova, - hwaddr size); + hwaddr size, Error **errp); int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, - uint64_t size, ram_addr_t ram_addr); + uint64_t size, ram_addr_t ram_addr, Error **errp); /* Returns 0 on success, or a negative errno. */ int vfio_device_get_name(VFIODevice *vbasedev, Error **errp); diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h index c76984654a596e3016a8cf833e10143eb872e102..ebc49ebfbe7de862450941b1129faad5d62b3769 100644 --- a/include/hw/vfio/vfio-container-base.h +++ b/include/hw/vfio/vfio-container-base.h @@ -85,7 +85,7 @@ int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, bool start, Error **errp); int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, - hwaddr iova, hwaddr size); + hwaddr iova, hwaddr size, Error **errp); void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space, @@ -138,9 +138,22 @@ struct VFIOIOMMUClass { */ int (*set_dirty_page_tracking)(const VFIOContainerBase *bcontainer, bool start, Error **errp); + /** + * @query_dirty_bitmap + * + * Get list of dirty pages from container + * + * @bcontainer: #VFIOContainerBase from which to get dirty pages + * @vbmap: #VFIOBitmap internal bitmap structure + * @iova: iova base address + * @size: size of iova range + * @errp: pointer to Error*, to store an error if it happens. + * + * Returns zero to indicate success and negative for error + */ int (*query_dirty_bitmap)(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, - hwaddr iova, hwaddr size); + hwaddr iova, hwaddr size, Error **errp); /* PCI specific */ int (*pci_hot_reset)(VFIODevice *vbasedev, bool single); diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 496e5adaf8f18e9ae7e86dd69be0b9e71e86404f..65a11dc088524647541db97b7b8d6f07e5044728 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1158,7 +1158,7 @@ static int vfio_device_dma_logging_report(VFIODevice *vbasedev, hwaddr iova, int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, hwaddr iova, - hwaddr size) + hwaddr size, Error **errp) { VFIODevice *vbasedev; int ret; @@ -1167,10 +1167,10 @@ int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, ret = vfio_device_dma_logging_report(vbasedev, iova, size, vbmap->bitmap); if (ret) { - error_report("%s: Failed to get DMA logging report, iova: " - "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx - ", err: %d (%s)", - vbasedev->name, iova, size, ret, strerror(-ret)); + error_setg(errp, "%s: Failed to get DMA logging report, iova: " + "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx + ", err: %d (%s)", + vbasedev->name, iova, size, ret, strerror(-ret)); return ret; } @@ -1180,7 +1180,7 @@ int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, } int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, - uint64_t size, ram_addr_t ram_addr) + uint64_t size, ram_addr_t ram_addr, Error **errp) { bool all_device_dirty_tracking = vfio_devices_all_device_dirty_tracking(bcontainer); @@ -1197,13 +1197,17 @@ int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, ret = vfio_bitmap_alloc(&vbmap, size); if (ret) { + error_setg_errno(errp, -ret, + "Failed to allocate dirty tracking bitmap"); return ret; } if (all_device_dirty_tracking) { - ret = vfio_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size); + ret = vfio_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size, + errp); } else { - ret = vfio_container_query_dirty_bitmap(bcontainer, &vbmap, iova, size); + ret = vfio_container_query_dirty_bitmap(bcontainer, &vbmap, iova, size, + errp); } if (ret) { @@ -1251,12 +1255,13 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) } ret = vfio_get_dirty_bitmap(bcontainer, iova, iotlb->addr_mask + 1, - translated_addr); + translated_addr, &local_err); if (ret) { - error_report("vfio_iommu_map_dirty_notify(%p, 0x%"HWADDR_PRIx", " - "0x%"HWADDR_PRIx") = %d (%s)", - bcontainer, iova, iotlb->addr_mask + 1, ret, - strerror(-ret)); + error_prepend(&local_err, + "vfio_iommu_map_dirty_notify(%p, 0x%"HWADDR_PRIx", " + "0x%"HWADDR_PRIx") failed :", bcontainer, iova, + iotlb->addr_mask + 1); + error_report_err(local_err); } out_lock: @@ -1276,12 +1281,19 @@ static int vfio_ram_discard_get_dirty_bitmap(MemoryRegionSection *section, const ram_addr_t ram_addr = memory_region_get_ram_addr(section->mr) + section->offset_within_region; VFIORamDiscardListener *vrdl = opaque; + Error *local_err = NULL; + int ret; /* * Sync the whole mapped region (spanning multiple individual mappings) * in one go. */ - return vfio_get_dirty_bitmap(vrdl->bcontainer, iova, size, ram_addr); + ret = vfio_get_dirty_bitmap(vrdl->bcontainer, iova, size, ram_addr, + &local_err); + if (ret) { + error_report_err(local_err); + } + return ret; } static int @@ -1313,7 +1325,7 @@ vfio_sync_ram_discard_listener_dirty_bitmap(VFIOContainerBase *bcontainer, } static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, - MemoryRegionSection *section) + MemoryRegionSection *section, Error **errp) { ram_addr_t ram_addr; @@ -1344,7 +1356,14 @@ static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, } return 0; } else if (memory_region_has_ram_discard_manager(section->mr)) { - return vfio_sync_ram_discard_listener_dirty_bitmap(bcontainer, section); + int ret; + + ret = vfio_sync_ram_discard_listener_dirty_bitmap(bcontainer, section); + if (ret) { + error_setg(errp, + "Failed to sync dirty bitmap with RAM discard listener"); + return ret; + } } ram_addr = memory_region_get_ram_addr(section->mr) + @@ -1352,7 +1371,7 @@ static int vfio_sync_dirty_bitmap(VFIOContainerBase *bcontainer, return vfio_get_dirty_bitmap(bcontainer, REAL_HOST_PAGE_ALIGN(section->offset_within_address_space), - int128_get64(section->size), ram_addr); + int128_get64(section->size), ram_addr, errp); } static void vfio_listener_log_sync(MemoryListener *listener, @@ -1361,16 +1380,16 @@ static void vfio_listener_log_sync(MemoryListener *listener, VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase, listener); int ret; + Error *local_err = NULL; if (vfio_listener_skipped_section(section)) { return; } if (vfio_devices_all_dirty_tracking(bcontainer)) { - ret = vfio_sync_dirty_bitmap(bcontainer, section); + ret = vfio_sync_dirty_bitmap(bcontainer, section, &local_err); if (ret) { - error_report("vfio: Failed to sync dirty bitmap, err: %d (%s)", ret, - strerror(-ret)); + error_report_err(local_err); vfio_set_migration_error(ret); } } diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c index 7c0764121d24b02b6c4e66e368d7dff78a6d65aa..8db59881873c3b1edee81104b966af737e5fa6f6 100644 --- a/hw/vfio/container-base.c +++ b/hw/vfio/container-base.c @@ -65,10 +65,11 @@ int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, - hwaddr iova, hwaddr size) + hwaddr iova, hwaddr size, Error **errp) { g_assert(bcontainer->ops->query_dirty_bitmap); - return bcontainer->ops->query_dirty_bitmap(bcontainer, vbmap, iova, size); + return bcontainer->ops->query_dirty_bitmap(bcontainer, vbmap, iova, size, + errp); } void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space, diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 6524575aeddcea8470b5fd10caf57475088d1813..475d96eaaa927998c6aa8cc9aa9f2115f5a1efda 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -131,6 +131,7 @@ static int vfio_legacy_dma_unmap(const VFIOContainerBase *bcontainer, }; bool need_dirty_sync = false; int ret; + Error *local_err = NULL; if (iotlb && vfio_devices_all_running_and_mig_active(bcontainer)) { if (!vfio_devices_all_device_dirty_tracking(bcontainer) && @@ -166,8 +167,9 @@ static int vfio_legacy_dma_unmap(const VFIOContainerBase *bcontainer, if (need_dirty_sync) { ret = vfio_get_dirty_bitmap(bcontainer, iova, size, - iotlb->translated_addr); + iotlb->translated_addr, &local_err); if (ret) { + error_report_err(local_err); return ret; } } @@ -237,7 +239,8 @@ vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer, static int vfio_legacy_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, - hwaddr iova, hwaddr size) + hwaddr iova, hwaddr size, + Error **errp) { const VFIOContainer *container = container_of(bcontainer, VFIOContainer, bcontainer); @@ -265,9 +268,9 @@ static int vfio_legacy_query_dirty_bitmap(const VFIOContainerBase *bcontainer, ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, dbitmap); if (ret) { ret = -errno; - error_report("Failed to get dirty bitmap for iova: 0x%"PRIx64 - " size: 0x%"PRIx64" err: %d", (uint64_t)range->iova, - (uint64_t)range->size, errno); + error_setg(errp, "Failed to get dirty bitmap for iova: 0x%"PRIx64 + " size: 0x%"PRIx64" err: %d", (uint64_t)range->iova, + (uint64_t)range->size, errno); } g_free(dbitmap);
Let the callers do the error reporting. Add documentation while at it. Signed-off-by: Cédric Le Goater <clg@redhat.com> --- include/hw/vfio/vfio-common.h | 4 +- include/hw/vfio/vfio-container-base.h | 17 +++++++- hw/vfio/common.c | 59 ++++++++++++++++++--------- hw/vfio/container-base.c | 5 ++- hw/vfio/container.c | 13 +++--- 5 files changed, 67 insertions(+), 31 deletions(-)