From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Joerg Roedel <jroedel@suse.de>
Subject: [PATCH 4.14 22/26] iommu/amd: Fix legacy interrupt remapping for x2APIC-enabled system
Date: Mon, 4 May 2020 19:57:36 +0200 [thread overview]
Message-ID: <20200504165447.383012450@linuxfoundation.org> (raw)
In-Reply-To: <20200504165442.494398840@linuxfoundation.org>
From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
commit b74aa02d7a30ee5e262072a7d6e8deff10b37924 upstream.
Currently, system fails to boot because the legacy interrupt remapping
mode does not enable 128-bit IRTE (GA), which is required for x2APIC
support.
Fix by using AMD_IOMMU_GUEST_IR_LEGACY_GA mode when booting with
kernel option amd_iommu_intr=legacy instead. The initialization
logic will check GASup and automatically fallback to using
AMD_IOMMU_GUEST_IR_LEGACY if GA mode is not supported.
Fixes: 3928aa3f5775 ("iommu/amd: Detect and enable guest vAPIC support")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/1587562202-14183-1-git-send-email-suravee.suthikulpanit@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iommu/amd_iommu_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -2809,7 +2809,7 @@ static int __init parse_amd_iommu_intr(c
{
for (; *str; ++str) {
if (strncmp(str, "legacy", 6) == 0) {
- amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY;
+ amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY_GA;
break;
}
if (strncmp(str, "vapic", 5) == 0) {
next prev parent reply other threads:[~2020-05-04 18:13 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 17:57 [PATCH 4.14 00/26] 4.14.179-rc1 review Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 01/26] ext4: fix special inode number checks in __ext4_iget() Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 02/26] drm/edid: Fix off-by-one in DispID DTD pixel clock Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 03/26] drm/qxl: qxl_release leak in qxl_draw_dirty_fb() Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 04/26] drm/qxl: qxl_release leak in qxl_hw_surface_alloc() Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 05/26] drm/qxl: qxl_release use after free Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 06/26] btrfs: fix block group leak when removing fails Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 07/26] btrfs: fix partial loss of prealloc extent past i_size after fsync Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 08/26] mmc: sdhci-xenon: fix annoying 1.8V regulator warning Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 09/26] mmc: sdhci-pci: Fix eMMC driver strength for BYT-based controllers Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 10/26] ALSA: hda/realtek - Two front mics on a Lenovo ThinkCenter Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 11/26] ALSA: hda/hdmi: fix without unlocked before return Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 12/26] ALSA: pcm: oss: Place the plugin buffer overflow checks correctly Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 13/26] PM: ACPI: Output correct message on target power state Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 14/26] PM: hibernate: Freeze kernel threads in software_resume() Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 15/26] dm verity fec: fix hash block number in verity_fec_decode Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 16/26] RDMA/mlx5: Set GRH fields in query QP on RoCE Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 17/26] RDMA/mlx4: Initialize ib_spec on the stack Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 18/26] vfio: avoid possible overflow in vfio_iommu_type1_pin_pages Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 19/26] vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn() Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 20/26] iommu/qcom: Fix local_base status check Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 21/26] scsi: target/iblock: fix WRITE SAME zeroing Greg Kroah-Hartman
2020-05-04 17:57 ` Greg Kroah-Hartman [this message]
2020-05-04 17:57 ` [PATCH 4.14 23/26] ALSA: opti9xx: shut up gcc-10 range warning Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 24/26] nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 25/26] dmaengine: dmatest: Fix iteration non-stop logic Greg Kroah-Hartman
2020-05-04 17:57 ` [PATCH 4.14 26/26] selinux: properly handle multiple messages in selinux_netlink_send() Greg Kroah-Hartman
2020-05-05 8:37 ` [PATCH 4.14 00/26] 4.14.179-rc1 review Jon Hunter
2020-05-05 15:35 ` Naresh Kamboju
2020-05-05 15:48 ` Guenter Roeck
2020-05-05 15:53 ` shuah
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