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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:43:27 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:43:27 +0000 |
| commit | 2923512cee3cfb8eaf935324ddc8f6edd8263e93 (patch) | |
| tree | 2cfe4d9883ebfd5ecede5f13892ee2d6e14c486e /drivers/dma/idxd/init.c | |
| parent | Adding upstream version 6.7.7. (diff) | |
| download | linux-2923512cee3cfb8eaf935324ddc8f6edd8263e93.tar.xz linux-2923512cee3cfb8eaf935324ddc8f6edd8263e93.zip | |
Adding upstream version 6.7.9.upstream/6.7.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/dma/idxd/init.c')
| -rw-r--r-- | drivers/dma/idxd/init.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 0eb1c827a2..d09a8553ea 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -342,7 +342,9 @@ static void idxd_cleanup_internals(struct idxd_device *idxd) static int idxd_init_evl(struct idxd_device *idxd) { struct device *dev = &idxd->pdev->dev; + unsigned int evl_cache_size; struct idxd_evl *evl; + const char *idxd_name; if (idxd->hw.gen_cap.evl_support == 0) return 0; @@ -354,9 +356,16 @@ static int idxd_init_evl(struct idxd_device *idxd) spin_lock_init(&evl->lock); evl->size = IDXD_EVL_SIZE_MIN; - idxd->evl_cache = kmem_cache_create(dev_name(idxd_confdev(idxd)), - sizeof(struct idxd_evl_fault) + evl_ent_size(idxd), - 0, 0, NULL); + idxd_name = dev_name(idxd_confdev(idxd)); + evl_cache_size = sizeof(struct idxd_evl_fault) + evl_ent_size(idxd); + /* + * Since completion record in evl_cache will be copied to user + * when handling completion record page fault, need to create + * the cache suitable for user copy. + */ + idxd->evl_cache = kmem_cache_create_usercopy(idxd_name, evl_cache_size, + 0, 0, 0, evl_cache_size, + NULL); if (!idxd->evl_cache) { kfree(evl); return -ENOMEM; |