path: root/drivers/iommu/intel/iommu.c
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2020-11-20 10:20:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-11-20 10:20:16 -0800
commitfc8299f9f3b9f3b0e1c8c9f719b5deb2a74ab314 (patch)
treee6b57d85889b4b699e22542af0863ceacbaca237 /drivers/iommu/intel/iommu.c
parent5de18678da02d893d2c1eb149583fca23c96584a (diff)
parent91c2c28d8de34815ea9bb4d16e9db7308ad33d3e (diff)
Merge tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull iommu fixes from Will Deacon: "Two straightforward vt-d fixes: - Fix boot when intel iommu initialisation fails under TXT (tboot) - Fix intel iommu compilation error when DMAR is enabled without ATS and temporarily update IOMMU MAINTAINERs entry" * tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: MAINTAINERS: Temporarily add myself to the IOMMU entry iommu/vt-d: Fix compile error with CONFIG_PCI_ATS not set iommu/vt-d: Avoid panic if iommu init fails in tboot system
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index c6622011d493..c71a9c279a33 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -179,7 +179,7 @@ static int rwbf_quirk;
* (used when kernel is launched w/ TXT)
static int force_on = 0;
-int intel_iommu_tboot_noforce;
+static int intel_iommu_tboot_noforce;
static int no_platform_optin;
#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
@@ -4884,7 +4884,8 @@ int __init intel_iommu_init(void)
* Intel IOMMU is required for a TXT/tboot launch or platform
* opt in, so enforce that.
- force_on = tboot_force_iommu() || platform_optin_force_iommu();
+ force_on = (!intel_iommu_tboot_noforce && tboot_force_iommu()) ||
+ platform_optin_force_iommu();
if (iommu_init_mempool()) {
if (force_on)