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Tsirkin" To: qemu-devel@nongnu.org Cc: Peter Maydell , Eric Auger , Shameer Kolothum , Zhangfei Gao , Jonathan Cameron , Igor Mammedov , Michael Tokarev Subject: [PULL 10/14] hw/pci-host/gpex-acpi: Fix _DSM function 0 support return value Message-ID: <325aa2d86a20786c308b0874d15a60d1b924bd0e.1762698873.git.mst@redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent 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=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1762699001060158500 From: Eric Auger Currently, only function 0 is supported. According to the ACPI Specification, Revision 6.6, Section 9.1.1 =E2=80=9C_DSM (Device Specific Method)=E2=80=9D, bit 0 should be 0 to indicate that no other functions are supported beyond function 0. The resulting AML change looks like this: Method (_DSM, 4, NotSerialized) // _DSM: Device-Specific Method { If ((Arg0 =3D=3D ToUUID ("e5c937d0-3553-4d7a-9117-ea4d19c3434d") { If ((Arg2 =3D=3D Zero)) { Return (Buffer (One) { - 0x01 // . + 0x00 // . }) } } } Fixes: 5b85eabe68f9 ("acpi: add acpi_dsdt_add_gpex") Signed-off-by: Eric Auger Signed-off-by: Shameer Kolothum Tested-by: Zhangfei Gao Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Message-Id: <20251022080639.243965-3-skolothumtho@nvidia.com> --- hw/pci-host/gpex-acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c index 952a0ace19..4587baeb78 100644 --- a/hw/pci-host/gpex-acpi.c +++ b/hw/pci-host/gpex-acpi.c @@ -64,7 +64,7 @@ static Aml *build_pci_host_bridge_dsm_method(void) UUID =3D aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); ifctx =3D aml_if(aml_equal(aml_arg(0), UUID)); ifctx1 =3D aml_if(aml_equal(aml_arg(2), aml_int(0))); - uint8_t byte_list[1] =3D {1}; + uint8_t byte_list[1] =3D {0}; buf =3D aml_buffer(1, byte_list); aml_append(ifctx1, aml_return(buf)); aml_append(ifctx, ifctx1); --=20 MST