| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.12 035/106] iommu/amd: Enable ga_log_intr when enabling guest_mode | Date | Wed, 9 Aug 2017 09:52:19 -0700 |
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4.12-stable review patch. If anyone has any objections, please let me know.
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From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
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@amd.com> Cc: Joerg Roedel <jroedel@suse.de> Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by default') Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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;
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