This is a note to let you know that I've just added the patch titled
iommu/amd: Enable ga_log_intr when enabling guest_mode
to the 4.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-amd-enable-ga_log_intr-when-enabling-guest_mode.patch
and it can be found in the queue-4.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From efe6f241602cb61466895f6816b8ea6b90f04d4e Mon Sep 17 00:00:00 2001
From: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
Date: Wed, 5 Jul 2017 21:29:59 -0500
Subject: iommu/amd: Enable ga_log_intr when enabling guest_mode
From: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
commit efe6f241602cb61466895f6816b8ea6b90f04d4e upstream.
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@xxxxxxx>
Cc: Joerg Roedel <jroedel@xxxxxxx>
Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by default')
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iommu/amd_iommu.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4316,6 +4316,7 @@ static int amd_ir_set_vcpu_affinity(stru
/* 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;
Patches currently in stable-queue which might be from suravee.suthikulpanit@xxxxxxx are
queue-4.12/iommu-amd-enable-ga_log_intr-when-enabling-guest_mode.patch