From d798939fbbe6c27200c165edd6f3771413821b34 Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Thu, 2 Nov 2023 15:12:36 +0800 Subject: [PATCH 011/101] vfio/container: Move pgsizes and dma_max_mappings to base container MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Eric Auger RH-MergeRequest: 211: IOMMUFD backend backport RH-Jira: RHEL-19302 RHEL-21057 RH-Acked-by: Cédric Le Goater RH-Acked-by: Sebastian Ott RH-Commit: [10/67] e80696175aba159a17ce9a869535db66682deb08 (eauger1/centos-qemu-kvm) No functional change intended. Signed-off-by: Eric Auger Signed-off-by: Yi Liu Signed-off-by: Yi Sun Signed-off-by: Zhenzhong Duan Reviewed-by: Cédric Le Goater Signed-off-by: Cédric Le Goater (cherry picked from commit 7ab1cb74ffdbf92ef237243b41bde5c7067d5298) Signed-off-by: Eric Auger --- hw/vfio/common.c | 17 +++++++++-------- hw/vfio/container-base.c | 1 + hw/vfio/container.c | 11 +++++------ hw/vfio/spapr.c | 10 ++++++---- include/hw/vfio/vfio-common.h | 2 -- include/hw/vfio/vfio-container-base.h | 2 ++ 6 files changed, 23 insertions(+), 20 deletions(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index cf6618f6ed..1cb53d369e 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -401,6 +401,7 @@ static int vfio_ram_discard_notify_populate(RamDiscardListener *rdl, static void vfio_register_ram_discard_listener(VFIOContainer *container, MemoryRegionSection *section) { + VFIOContainerBase *bcontainer = &container->bcontainer; RamDiscardManager *rdm = memory_region_get_ram_discard_manager(section->mr); VFIORamDiscardListener *vrdl; @@ -419,8 +420,8 @@ static void vfio_register_ram_discard_listener(VFIOContainer *container, section->mr); g_assert(vrdl->granularity && is_power_of_2(vrdl->granularity)); - g_assert(container->pgsizes && - vrdl->granularity >= 1ULL << ctz64(container->pgsizes)); + g_assert(bcontainer->pgsizes && + vrdl->granularity >= 1ULL << ctz64(bcontainer->pgsizes)); ram_discard_listener_init(&vrdl->listener, vfio_ram_discard_notify_populate, @@ -441,7 +442,7 @@ static void vfio_register_ram_discard_listener(VFIOContainer *container, * number of sections in the address space we could have over time, * also consuming DMA mappings. */ - if (container->dma_max_mappings) { + if (bcontainer->dma_max_mappings) { unsigned int vrdl_count = 0, vrdl_mappings = 0, max_memslots = 512; #ifdef CONFIG_KVM @@ -462,11 +463,11 @@ static void vfio_register_ram_discard_listener(VFIOContainer *container, } if (vrdl_mappings + max_memslots - vrdl_count > - container->dma_max_mappings) { + bcontainer->dma_max_mappings) { warn_report("%s: possibly running out of DMA mappings. E.g., try" " increasing the 'block-size' of virtio-mem devies." " Maximum possible DMA mappings: %d, Maximum possible" - " memslots: %d", __func__, container->dma_max_mappings, + " memslots: %d", __func__, bcontainer->dma_max_mappings, max_memslots); } } @@ -626,7 +627,7 @@ static void vfio_listener_region_add(MemoryListener *listener, iommu_idx); ret = memory_region_iommu_set_page_size_mask(giommu->iommu_mr, - container->pgsizes, + bcontainer->pgsizes, &err); if (ret) { g_free(giommu); @@ -675,7 +676,7 @@ static void vfio_listener_region_add(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); if (memory_region_is_ram_device(section->mr)) { - hwaddr pgmask = (1ULL << ctz64(container->pgsizes)) - 1; + hwaddr pgmask = (1ULL << ctz64(bcontainer->pgsizes)) - 1; if ((iova & pgmask) || (int128_get64(llsize) & pgmask)) { trace_vfio_listener_region_add_no_dma_map( @@ -777,7 +778,7 @@ static void vfio_listener_region_del(MemoryListener *listener, if (memory_region_is_ram_device(section->mr)) { hwaddr pgmask; - pgmask = (1ULL << ctz64(container->pgsizes)) - 1; + pgmask = (1ULL << ctz64(bcontainer->pgsizes)) - 1; try_unmap = !((iova & pgmask) || (int128_get64(llsize) & pgmask)); } else if (memory_region_has_ram_discard_manager(section->mr)) { vfio_unregister_ram_discard_listener(container, section); diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c index 5d654ae172..dcce111349 100644 --- a/hw/vfio/container-base.c +++ b/hw/vfio/container-base.c @@ -52,6 +52,7 @@ void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space, bcontainer->ops = ops; bcontainer->space = space; bcontainer->dirty_pages_supported = false; + bcontainer->dma_max_mappings = 0; QLIST_INIT(&bcontainer->giommu_list); } diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 7bd81eab09..c5a6262882 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -154,7 +154,7 @@ static int vfio_legacy_dma_unmap(VFIOContainerBase *bcontainer, hwaddr iova, if (errno == EINVAL && unmap.size && !(unmap.iova + unmap.size) && container->iommu_type == VFIO_TYPE1v2_IOMMU) { trace_vfio_legacy_dma_unmap_overflow_workaround(); - unmap.size -= 1ULL << ctz64(container->pgsizes); + unmap.size -= 1ULL << ctz64(bcontainer->pgsizes); continue; } error_report("VFIO_UNMAP_DMA failed: %s", strerror(errno)); @@ -559,7 +559,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as, container = g_malloc0(sizeof(*container)); container->fd = fd; container->error = NULL; - container->dma_max_mappings = 0; container->iova_ranges = NULL; QLIST_INIT(&container->vrdl_list); bcontainer = &container->bcontainer; @@ -589,13 +588,13 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as, } if (info->flags & VFIO_IOMMU_INFO_PGSIZES) { - container->pgsizes = info->iova_pgsizes; + bcontainer->pgsizes = info->iova_pgsizes; } else { - container->pgsizes = qemu_real_host_page_size(); + bcontainer->pgsizes = qemu_real_host_page_size(); } - if (!vfio_get_info_dma_avail(info, &container->dma_max_mappings)) { - container->dma_max_mappings = 65535; + if (!vfio_get_info_dma_avail(info, &bcontainer->dma_max_mappings)) { + bcontainer->dma_max_mappings = 65535; } vfio_get_info_iova_range(info, container); diff --git a/hw/vfio/spapr.c b/hw/vfio/spapr.c index 83da2f7ec2..4f76bdd3ca 100644 --- a/hw/vfio/spapr.c +++ b/hw/vfio/spapr.c @@ -226,6 +226,7 @@ static int vfio_spapr_create_window(VFIOContainer *container, hwaddr *pgsize) { int ret = 0; + VFIOContainerBase *bcontainer = &container->bcontainer; IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr); uint64_t pagesize = memory_region_iommu_get_min_page_size(iommu_mr), pgmask; unsigned entries, bits_total, bits_per_level, max_levels; @@ -239,13 +240,13 @@ static int vfio_spapr_create_window(VFIOContainer *container, if (pagesize > rampagesize) { pagesize = rampagesize; } - pgmask = container->pgsizes & (pagesize | (pagesize - 1)); + pgmask = bcontainer->pgsizes & (pagesize | (pagesize - 1)); pagesize = pgmask ? (1ULL << (63 - clz64(pgmask))) : 0; if (!pagesize) { error_report("Host doesn't support page size 0x%"PRIx64 ", the supported mask is 0x%lx", memory_region_iommu_get_min_page_size(iommu_mr), - container->pgsizes); + bcontainer->pgsizes); return -EINVAL; } @@ -421,6 +422,7 @@ void vfio_container_del_section_window(VFIOContainer *container, int vfio_spapr_container_init(VFIOContainer *container, Error **errp) { + VFIOContainerBase *bcontainer = &container->bcontainer; struct vfio_iommu_spapr_tce_info info; bool v2 = container->iommu_type == VFIO_SPAPR_TCE_v2_IOMMU; int ret, fd = container->fd; @@ -461,7 +463,7 @@ int vfio_spapr_container_init(VFIOContainer *container, Error **errp) } if (v2) { - container->pgsizes = info.ddw.pgsizes; + bcontainer->pgsizes = info.ddw.pgsizes; /* * There is a default window in just created container. * To make region_add/del simpler, we better remove this @@ -476,7 +478,7 @@ int vfio_spapr_container_init(VFIOContainer *container, Error **errp) } } else { /* The default table uses 4K pages */ - container->pgsizes = 0x1000; + bcontainer->pgsizes = 0x1000; vfio_host_win_add(container, info.dma32_window_start, info.dma32_window_start + info.dma32_window_size - 1, diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index bc67e1316c..d3dc2f9dcb 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -85,8 +85,6 @@ typedef struct VFIOContainer { bool initialized; uint64_t dirty_pgsizes; uint64_t max_dirty_bitmap_size; - unsigned long pgsizes; - unsigned int dma_max_mappings; QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list; QLIST_HEAD(, VFIOGroup) group_list; QLIST_HEAD(, VFIORamDiscardListener) vrdl_list; diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h index 7090962496..85ec7e1a56 100644 --- a/include/hw/vfio/vfio-container-base.h +++ b/include/hw/vfio/vfio-container-base.h @@ -36,6 +36,8 @@ typedef struct VFIOAddressSpace { typedef struct VFIOContainerBase { const VFIOIOMMUOps *ops; VFIOAddressSpace *space; + unsigned long pgsizes; + unsigned int dma_max_mappings; bool dirty_pages_supported; QLIST_HEAD(, VFIOGuestIOMMU) giommu_list; QLIST_ENTRY(VFIOContainerBase) next; -- 2.39.3