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DIR:OUT; SFP:1101; SCL:1; SRVR:SN6PR12MB2623; H:SN6PR12MB2688.namprd12.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: jqP3HYRBvYbV0rCxnXbZ4fZAjJITrZU3co7wUEGdblql2lqEZMe8Ja2tDotaYz3RnSGrGgrekBdPtFCbhVm3qWMUXS54eZoYLnm3NklPgl2DKmL7oC7TiZrz1w2wpn8Vi+o0zjmmEW+Sf+ytzxoXNi8QhXkHOqvJOyiqnbFoN6pu2FTdk+4KgKN5GMO1w/YQZzYEXU8F2nZrxsT8fBiCkLMYkk/veRhmqK44tNcw2gKjqhjfa1VEHjDH4hGRR00s88AtyQKqpzFCU25TdNLTj8HGwqJQa9aHdR2s7xEEYQ9W54ikFijOjphd/qQF1yiy2CNIQgHgphnRYrcAaGj1LG0ioVZQmcl15hM7x8TwVpfAP5rij+//CSTeKoE904Au5CGy9W3z+ZXAIyLAo/znY0aPI36nAdIblfu5P9xXp7Q= MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2fd79d17-d337-4840-0462-08d68aef6a12 X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Feb 2019 22:23:39.9025 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR12MB2623 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 40.107.75.44 Subject: [Qemu-devel] [PATCH v2 2/2] target/i386: sev: Do not pin the ram device memory region X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , "alex.williamson@redhat.com" , "Singh, Brijesh" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The RAM device presents a memory region that should be handled as an IO region and should not be pinned. In the case of the vfio-pci, RAM device represents a MMIO BAR and the memory region is not backed by pages hence KVM_MEMORY_ENCRYPT_REG_REGION fails to lock the memory range. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1667249 Cc: Alex Williamson Cc: Paolo Bonzini Signed-off-by: Brijesh Singh Reviewed-by: Alex Williamson --- target/i386/sev.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/target/i386/sev.c b/target/i386/sev.c index 20b2d325d8..cd77f6b5d4 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -131,6 +131,17 @@ sev_ram_block_added(RAMBlockNotifier *n, void *host, size_t size) { int r; struct kvm_enc_region range; + ram_addr_t offset; + MemoryRegion *mr; + + /* + * The RAM device presents a memory region that should be treated + * as IO region and should not be pinned. + */ + mr = memory_region_from_host(host, &offset); + if (mr && memory_region_is_ram_device(mr)) { + return; + } range.addr = (__u64)(unsigned long)host; range.size = size;