linux-kernel - [PATCH 2/2] iommu/amd: Revise ga_tag member in struct of fields

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Date:   Fri, 4 Sep 2020 18:07:47 +0800
From:   Wesley Sheng <wesley.sheng@....com>
To:     <joro@...tes.org>, <iommu@...ts.linux-foundation.org>,
        <linux-kernel@...r.kernel.org>
CC:     <wesleyshenggit@...a.com>, <wesley.sheng@....com>
Subject: [PATCH 2/2] iommu/amd: Revise ga_tag member in struct of fields_remap

Per <<AMD I/0 Virtualization Technology (IOMMU) specification>>
ga_tag member is only available when IRTE[GuestMode]=1, this field
should be reserved when IRTE[GuestMode]=0. So change the ga_tag
to rsvd_1 in struct of fields_remap.

Signed-off-by: Wesley Sheng <wesley.sheng@....com>
---
 drivers/iommu/amd/amd_iommu_types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index e5b05a97eb46..baa31cd2411c 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -832,7 +832,7 @@ union irte_ga_lo {
 		    /* ------ */
 		    guest_mode	: 1,
 		    destination	: 24,
-		    ga_tag	: 32;
+		    rsvd_1	: 32;
 	} fields_remap;
 
 	/* For guest vAPIC */
-- 
2.16.2