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Tue, 2 Jul 2024 05:52:34 +0000 From: CLEMENT MATHIEU--DRIF To: "qemu-devel@nongnu.org" CC: "jasowang@redhat.com" , "zhenzhong.duan@intel.com" , "kevin.tian@intel.com" , "yi.l.liu@intel.com" , "joao.m.martins@oracle.com" , "peterx@redhat.com" , "mst@redhat.com" , CLEMENT MATHIEU--DRIF Subject: [PATCH ats_vtd v5 04/22] intel_iommu: do not consider wait_desc as an invalid descriptor Thread-Topic: [PATCH ats_vtd v5 04/22] intel_iommu: do not consider wait_desc as an invalid descriptor Thread-Index: AQHazEQIBXXzL7bpek6rQxeDAgf6ew== Date: Tue, 2 Jul 2024 05:52:34 +0000 Message-ID: <20240702055221.1337035-5-clement.mathieu--drif@eviden.com> References: <20240702055221.1337035-1-clement.mathieu--drif@eviden.com> In-Reply-To: <20240702055221.1337035-1-clement.mathieu--drif@eviden.com> Accept-Language: en-GB, fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=eviden.com; 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envelope-from=clement.mathieu--drif@eviden.com; helo=smarthost2.eviden.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Clément Mathieu--Drif Signed-off-by: Clément Mathieu--Drif Reviewed-by: Zhenzhong Duan --- hw/i386/intel_iommu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 98996ededc..71cebe2fd3 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3500,6 +3500,11 @@ static bool vtd_process_wait_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) } else if (inv_desc->lo & VTD_INV_DESC_WAIT_IF) { /* Interrupt flag */ vtd_generate_completion_event(s); + } else if (inv_desc->lo & VTD_INV_DESC_WAIT_FN) { + /* + * SW = 0, IF = 0, FN = 1 + * Nothing to do as we process the events sequentially + */ } else { error_report_once("%s: invalid wait desc: hi=%"PRIx64", lo=%"PRIx64 " (unknown type)", __func__, inv_desc->hi,