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Date: Fri, 10 Mar 2017 10:08:06 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org, Joerg Roedel <joro@...tes.org>, David Woodhouse <dwmw2@...radead.org> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, iommu@...ts.linux-foundation.org, Ashok Raj <ashok.raj@...el.com>, Yunhong Jiang <yunhong.jiang@...el.com>, Joerg Roedel <jroedel@...e.de> Subject: [PATCH 4.10 043/167] iommu/vt-d: Tylersburg isoch identity map check is done too late. 4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ashok Raj <ashok.raj@...el.com> commit 21e722c4c8377b5bc82ad058fed12165af739c1b upstream. The check to set identity map for tylersburg is done too late. It needs to be done before the check for identity_map domain is done. To: Joerg Roedel <joro@...tes.org> To: David Woodhouse <dwmw2@...radead.org> Cc: iommu@...ts.linux-foundation.org Cc: linux-kernel@...r.kernel.org Cc: Ashok Raj <ashok.raj@...el.com> Fixes: 86080ccc22 ("iommu/vt-d: Allocate si_domain in init_dmars()") Signed-off-by: Ashok Raj <ashok.raj@...el.com> Reported-by: Yunhong Jiang <yunhong.jiang@...el.com> Signed-off-by: Joerg Roedel <jroedel@...e.de> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/iommu/intel-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3325,13 +3325,14 @@ static int __init init_dmars(void) iommu_identity_mapping |= IDENTMAP_GFX; #endif + check_tylersburg_isoch(); + if (iommu_identity_mapping) { ret = si_domain_init(hw_pass_through); if (ret) goto free_iommu; } - check_tylersburg_isoch(); /* * If we copied translations from a previous kernel in the kdump
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