iommu/vt-d: Fix status code for Allocate/Free PASID command

As per Intel vt-d spec, Rev 3.0 (section 10.4.45 "Virtual Command Response
Register"), the status code of "No PASID available" error in response to
the Allocate PASID command is 2, not 1. The same for "Invalid PASID" error
in response to the Free PASID command.

We will otherwise see confusing kernel log under the command failure from
guest side. Fix it.

Fixes: 24f27d32ab6b ("iommu/vt-d: Enlightened PASID allocation")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210227073909.432-1-yuzenghui@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel/pasid.h b/drivers/iommu/intel/pasid.h
index 97dfcffbf495a9fe7a4bfb86844a44475294e1b5..444c0bec221a441a44d54d3533cc21da838a04b8 100644 (file)
--- a/drivers/iommu/intel/pasid.h
+++ b/drivers/iommu/intel/pasid.h
@@ -30,8 +30,8 @@
 #define VCMD_VRSP_IP                   0x1
 #define VCMD_VRSP_SC(e)                        (((e) >> 1) & 0x3)
 #define VCMD_VRSP_SC_SUCCESS           0
-#define VCMD_VRSP_SC_NO_PASID_AVAIL    1
-#define VCMD_VRSP_SC_INVALID_PASID     1
+#define VCMD_VRSP_SC_NO_PASID_AVAIL    2
+#define VCMD_VRSP_SC_INVALID_PASID     2
 #define VCMD_VRSP_RESULT_PASID(e)      (((e) >> 8) & 0xfffff)
 #define VCMD_CMD_OPERAND(e)            ((e) << 8)
 /*