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| author | John Garry <john.garry@huawei.com> | 2022-02-03 17:59:20 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-02-14 15:43:15 +0100 |
| commit | 32e92d9f6f876721cc4f565f8369d542b6266380 (patch) | |
| tree | 5bff28207f3a1b6108f3791914d8f2212d37f017 /drivers/vdpa | |
| parent | 114a6f5015df8eda0cf37302914cb15a3da3f086 (diff) | |
| download | linux-stable-32e92d9f6f876721cc4f565f8369d542b6266380.tar.gz linux-stable-32e92d9f6f876721cc4f565f8369d542b6266380.tar.bz2 linux-stable-32e92d9f6f876721cc4f565f8369d542b6266380.zip | |
iommu/iova: Separate out rcache init
Currently the rcache structures are allocated for all IOVA domains, even if
they do not use "fast" alloc+free interface. This is wasteful of memory.
In addition, fails in init_iova_rcaches() are not handled safely, which is
less than ideal.
Make "fast" users call a separate rcache init explicitly, which includes
error checking.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/1643882360-241739-1-git-send-email-john.garry@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa_user/iova_domain.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa_user/iova_domain.c b/drivers/vdpa/vdpa_user/iova_domain.c index 2b1143f11d8f..22f7d43f8a68 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.c +++ b/drivers/vdpa/vdpa_user/iova_domain.c @@ -480,6 +480,7 @@ vduse_domain_create(unsigned long iova_limit, size_t bounce_size) struct file *file; struct vduse_bounce_map *map; unsigned long pfn, bounce_pfns; + int ret; bounce_pfns = PAGE_ALIGN(bounce_size) >> PAGE_SHIFT; if (iova_limit <= bounce_size) @@ -513,10 +514,20 @@ vduse_domain_create(unsigned long iova_limit, size_t bounce_size) spin_lock_init(&domain->iotlb_lock); init_iova_domain(&domain->stream_iovad, PAGE_SIZE, IOVA_START_PFN); + ret = iova_domain_init_rcaches(&domain->stream_iovad); + if (ret) + goto err_iovad_stream; init_iova_domain(&domain->consistent_iovad, PAGE_SIZE, bounce_pfns); + ret = iova_domain_init_rcaches(&domain->consistent_iovad); + if (ret) + goto err_iovad_consistent; return domain; +err_iovad_consistent: + put_iova_domain(&domain->stream_iovad); +err_iovad_stream: + fput(file); err_file: vfree(domain->bounce_maps); err_map: |