From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
To: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org
Cc: joro@8bytes.org, jroedel@suse.de,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: [PATCH] iommu/amd: Enable ga_log_intr when enabling guest_mode
Date: Wed, 5 Jul 2017 21:29:59 -0500 [thread overview]
Message-ID: <1499308199-18266-1-git-send-email-suravee.suthikulpanit@amd.com> (raw)
IRTE[GALogIntr] bit should set when enabling guest_mode, which enables
IOMMU to generate entry in GALog when IRTE[IsRun] is not set, and send
an interrupt to notify IOMMU driver.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Joerg Roedel <jroedel@suse.de>
Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by default')
---
drivers/iommu/amd_iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 0f1219f..28fbc81 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4316,6 +4316,7 @@ static int amd_ir_set_vcpu_affinity(struct irq_data *data, void *vcpu_info)
/* Setting */
irte->hi.fields.ga_root_ptr = (pi_data->base >> 12);
irte->hi.fields.vector = vcpu_pi_info->vector;
+ irte->lo.fields_vapic.ga_log_intr = 1;
irte->lo.fields_vapic.guest_mode = 1;
irte->lo.fields_vapic.ga_tag = pi_data->ga_tag;
--
1.8.3.1
next reply other threads:[~2017-07-06 2:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-06 2:29 Suravee Suthikulpanit [this message]
2017-07-25 13:05 ` Joerg Roedel
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