diff options
| 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/iommu/dma-iommu.c | |
| parent | 114a6f5015df8eda0cf37302914cb15a3da3f086 (diff) | |
| download | linux-32e92d9f6f876721cc4f565f8369d542b6266380.tar.bz2 | |
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/iommu/dma-iommu.c')
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index d85d54f2b549..b22034975301 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -525,6 +525,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, struct iommu_dma_cookie *cookie = domain->iova_cookie; unsigned long order, base_pfn; struct iova_domain *iovad; + int ret; if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE) return -EINVAL; @@ -559,6 +560,9 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, } init_iova_domain(iovad, 1UL << order, base_pfn); + ret = iova_domain_init_rcaches(iovad); + if (ret) + return ret; /* If the FQ fails we can simply fall back to strict mode */ if (domain->type == IOMMU_DOMAIN_DMA_FQ && iommu_dma_init_fq(domain)) |