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accel/amdxdna: Require carveout when PASID and force_iova are disabled

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When both PASID and force_iova are disabled, carveout memory should be
used. Reject buffer allocations that cannot use carveout memory in this
configuration and return an error.

Fixes: 3cc5d7a595 ("accel/amdxdna: Add carveout memory support for non-IOMMU systems")
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260604195459.2423279-1-lizhi.hou@amd.com
This commit is contained in:
Lizhi Hou
2026-06-04 12:54:59 -07:00
parent 62c1671f64
commit 65cbdffa32
1 changed files with 7 additions and 1 deletions
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8
drivers/accel/amdxdna/amdxdna_pci_drv.c
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@@ -120,8 +120,14 @@ static int amdxdna_drm_open(struct drm_device *ddev, struct drm_file *filp)
if (!amdxdna_iova_on(xdna)) {
/* No need to fail open since user may use pa + carveout later. */
if (amdxdna_sva_init(client))
if (amdxdna_sva_init(client)) {
XDNA_WARN(xdna, "PASID not available for pid %d", client->pid);
if (!amdxdna_use_carveout(xdna)) {
XDNA_ERR(xdna, "PASID unavailable and carveout not configured");
kfree(client);
return -EINVAL;
}
}
}
mmgrab(client->mm);
init_srcu_struct(&client->hwctx_srcu);