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

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[ Upstream commit 444d66a23c ]

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: 24f27d32ab ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zenghui Yu
2021-02-27 15:39:09 +08:00
committed by Greg Kroah-Hartman
parent 5cc0813e7b
commit a7cefaccca
1 changed files with 2 additions and 2 deletions
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4
drivers/iommu/intel/pasid.h
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@@ -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)
/*