From 7962a8df538692f9ddb7a50d5a73fa24e36c2814 Mon Sep 17 00:00:00 2001 From: Yi Liu Date: Wed, 15 Feb 2023 16:58:16 +0800 Subject: [PATCH] iommu/vt-d: Check correct capability for sagaw determination stable inclusion from stable-v5.10.146 commit 0d99b180ce68a691d835c8292bc260379f1e20ba category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0VX Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0d99b180ce68a691d835c8292bc260379f1e20ba -------------------------------- commit 154897807050c1161cb2660e502fc0470d46b986 upstream. Check 5-level paging capability for 57 bits address width instead of checking 1GB large page capability. Fixes: 53fc7ad6edf2 ("iommu/vt-d: Correctly calculate sagaw value of IOMMU") Cc: stable@vger.kernel.org Reported-by: Raghunathan Srinivasan Signed-off-by: Yi Liu Reviewed-by: Jerry Snitselaar Reviewed-by: Kevin Tian Reviewed-by: Raghunathan Srinivasan Link: https://lore.kernel.org/r/20220916071212.2223869-2-yi.l.liu@intel.com Signed-off-by: Lu Baolu Signed-off-by: Joerg Roedel Signed-off-by: Greg Kroah-Hartman Signed-off-by: Jialin Zhang Reviewed-by: Zheng Zengkai --- drivers/iommu/intel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index c92e7adfd958..671685e22c7b 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -569,7 +569,7 @@ static unsigned long __iommu_calculate_sagaw(struct intel_iommu *iommu) { unsigned long fl_sagaw, sl_sagaw; - fl_sagaw = BIT(2) | (cap_fl1gp_support(iommu->cap) ? BIT(3) : 0); + fl_sagaw = BIT(2) | (cap_5lp_support(iommu->cap) ? BIT(3) : 0); sl_sagaw = cap_sagaw(iommu->cap); /* Second level only. */ -- GitLab