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a="77125582" X-IronPort-AV: E=Sophos;i="6.23,179,1770624000"; d="scan'208";a="77125582" X-CSE-ConnectionGUID: dnfPAyV4Rh+xZNMF/HiMhQ== X-CSE-MsgGUID: zCg73EVURqWAmUwJRnwgSQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,179,1770624000"; d="scan'208";a="253596600" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: mst@redhat.com, jasowang@redhat.com, philmd@linaro.org, Zhenzhong Duan , Yi Liu , =?UTF-8?q?Cl=C3=A9ment=20Mathieu--Drif?= Subject: [PATCH] intel_iommu: Re-expose VTD_ECAP_PT Date: Wed, 15 Apr 2026 05:58:32 -0400 Message-ID: <20260415095832.9631-1-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=198.175.65.19; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -48 X-Spam_score: -4.9 X-Spam_bar: ---- X-Spam_report: (-4.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1776247180130158500 Content-Type: text/plain; charset="utf-8" Commit c7b2e22bd957 cleared VTD_ECAP_PT in ecap register and set PHMT bit in cap register, makes vIOMMU passthrough unsupported, fix it. Fixes: c7b2e22bd957 ("hw/i386/x86-iommu: Remove X86IOMMUState::pt_supported= field") Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index f395fa248c..6b8f75a8b6 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -4998,8 +4998,8 @@ static void vtd_cap_init(IntelIOMMUState *s) { X86IOMMUState *x86_iommu =3D X86_IOMMU_DEVICE(s); =20 - s->cap =3D VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND | VTD_ECAP_PT | - VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SSLPS | VTD_CAP_DRAIN | + s->cap =3D VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND | VTD_CAP_MAMV | + VTD_CAP_PSI | VTD_CAP_SSLPS | VTD_CAP_DRAIN | VTD_CAP_ESRTPS | VTD_CAP_MGAW(s->aw_bits); if (x86_iommu->dma_translation) { if (s->aw_bits >=3D VTD_HOST_AW_39BIT) { @@ -5009,7 +5009,7 @@ static void vtd_cap_init(IntelIOMMUState *s) s->cap |=3D VTD_CAP_SAGAW_48bit; } } - s->ecap =3D VTD_ECAP_QI | VTD_ECAP_IRO; + s->ecap =3D VTD_ECAP_QI | VTD_ECAP_IRO | VTD_ECAP_PT; =20 if (x86_iommu_ir_supported(x86_iommu)) { s->ecap |=3D VTD_ECAP_IR | VTD_ECAP_MHMV; --=20 2.47.3