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Mon, 22 Aug 2016 23:26:18 +0000 Subject: [RFC PATCH v1 13/28] iommu/amd: AMD IOMMU support for SEV From: Brijesh Singh To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Date: Mon, 22 Aug 2016 19:26:13 -0400 Message-ID: <147190837333.9523.16962214308407411754.stgit@brijesh-build-machine> In-Reply-To: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> References: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: YQXPR01CA0055.CANPRD01.PROD.OUTLOOK.COM (10.165.103.23) To BLUPR12MB0659.namprd12.prod.outlook.com (10.163.217.29) X-MS-Office365-Filtering-Correlation-Id: fa4e86ef-d05d-43c9-c8ad-08d3cae3ba95 X-Microsoft-Exchange-Diagnostics: 1; BLUPR12MB0659; 2:6oJEXIFHV8p4T6BnGr/hWfsZ0ZkyRSJRNFJgM8IbIAFR9/x5Q0oYOwsvCg8xcrG9qCX4BHlYmDmRntt4cdHtLDmpXMOjQagi6TL7TEn220gf0+DoqFLVAC+HuriHhQtoU2hN+wqaKU1hR6EWV1jE/ZM5WYYOx7WfEJq22UGZPbGFmlfplcaKr4cEAjEs108V; 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So if SEV is active, do not return the encryption mask to the IOMMU. Signed-off-by: Tom Lendacky --- arch/x86/mm/mem_encrypt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index ce6e3ea..d6e9f96 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -237,7 +237,7 @@ void __init mem_encrypt_init(void) unsigned long amd_iommu_get_me_mask(void) { - return sme_me_mask; + return sev_active ? 0 : sme_me_mask; } unsigned long swiotlb_get_me_mask(void)