From nobody Thu Nov 14 16:58:15 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+69979+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+69979+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1610049456; cv=none; d=zohomail.com; s=zohoarc; b=ew15KGZ8DhuD2CJI1v9xNbQGAMmcAMU1fB6/aX2QO+KqjVaX/+utBn+o7mOZ1c4+yb+qCYxYvDwIGsFu3tmdPtAWxvREbtYqgzn4B7lpDaMosR1ZPBJqBWKtgoRNNqkYB7xs9mvFpzDt8F9CZP9V3Ppd3Mx8f4nWLgaYjR96U6E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1610049456; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Id:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=hpUvJ3j7GNJyaWKRijLHN7tpKLN7QGVv7WoZSf4ojlU=; b=PHNfWtYh2dHjSYq0vuezr+fBvH8NM7x+Ee062v8r8dXW/JfU+sacuJXnamz0C/ZeeRm8T0YA5FPDq94qsYScqfxq0dpqcs//TALH9WlRKaLCg8Td1bKA3BEGsFzAVqD7jPY6geavUrC1CKbBHSjQ56sprFtDJpRnpp4/nH0KYys= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+69979+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) header.from= Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1610049456296244.66707380624814; Thu, 7 Jan 2021 11:57:36 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id TMU2YY1788612xBt61IEEvX7; Thu, 07 Jan 2021 11:57:35 -0800 X-Received: from aserp2120.oracle.com (aserp2120.oracle.com [141.146.126.78]) by mx.groups.io with SMTP id smtpd.web08.2230.1610049450451219305 for ; Thu, 07 Jan 2021 11:57:30 -0800 X-Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 107JtQ5n013632; Thu, 7 Jan 2021 19:57:27 GMT X-Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by aserp2120.oracle.com with ESMTP id 35wepme2tp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 07 Jan 2021 19:57:27 +0000 X-Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 107JacP9136060; Thu, 7 Jan 2021 19:55:26 GMT X-Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 35w3qu6cqy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Jan 2021 19:55:26 +0000 X-Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 107JtPpI021867; Thu, 7 Jan 2021 19:55:25 GMT X-Received: from localhost.localdomain (/70.36.60.91) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 07 Jan 2021 11:55:24 -0800 From: "Ankur Arora" To: devel@edk2.groups.io Cc: lersek@redhat.com, imammedo@redhat.com, boris.ostrovsky@oracle.com, Ankur Arora , Jordan Justen , Ard Biesheuvel , Aaron Young Subject: [edk2-devel] [PATCH v2 02/10] OvmfPkg/CpuHotplugSmm: handle Hot-unplug events Date: Thu, 7 Jan 2021 11:55:07 -0800 Message-Id: <20210107195515.106158-3-ankur.a.arora@oracle.com> In-Reply-To: <20210107195515.106158-1-ankur.a.arora@oracle.com> References: <20210107195515.106158-1-ankur.a.arora@oracle.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,ankur.a.arora@oracle.com X-Gm-Message-State: o2mNMZtEOTkKh0Qx40S7fnu3x1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1610049455; bh=xEubsMPTZyEZ6xRzvtBEPgHjYQMeT7JfFWOof0aPNyw=; h=Cc:Date:From:Reply-To:Subject:To; b=YQGgqZ2Xxn9ympCdiVnHA7boRgaoCaHg9ArptQxfPql+2M+DslAE/lyyW6+UqJ0Od9p XlXmSrVyUG5I9ehhZjPRdqzg/fFffd+MPGpIfhhGsqL6w1F0zWeIjRKJVNhOtjsp7hmhc fH/B9O/t1+1lAFOciZoJ/640leai4oCeqJ8= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" Process fw_remove events in QemuCpuhpCollectApicIds() and collect corresponding APIC IDs for CPUs that are being hot-unplugged. Additionally we now ignore CPUs which have only remove set. These CPUs haven't been processed by OSPM yet. This is based on the QEMU hot-unplug protocol documented here: https://lore.kernel.org/qemu-devel/20201204170939.1815522-3-imammedo@redhat= .com/ Also define QEMU_CPUHP_STAT_EJECTED while we are at it. Cc: Laszlo Ersek Cc: Jordan Justen Cc: Ard Biesheuvel Cc: Igor Mammedov Cc: Boris Ostrovsky Cc: Aaron Young Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3132 Signed-off-by: Ankur Arora --- OvmfPkg/CpuHotplugSmm/QemuCpuhp.c | 35 +++++++++++++++++--= ---- OvmfPkg/Include/IndustryStandard/QemuCpuHotplug.h | 2 ++ 2 files changed, 29 insertions(+), 8 deletions(-) diff --git a/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c b/OvmfPkg/CpuHotplugSmm/Qemu= Cpuhp.c index 8d4a6693c8d6..2dd783ebf42e 100644 --- a/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c +++ b/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c @@ -205,7 +205,7 @@ QemuCpuhpCollectApicIds ( UINT8 CpuStatus; APIC_ID *ExtendIds; UINT32 *ExtendCount; - APIC_ID NewApicId; + APIC_ID OpApicId; =20 // // Write CurrentSelector (which is valid) to the CPU selector register. @@ -245,10 +245,10 @@ QemuCpuhpCollectApicIds ( if ((CpuStatus & QEMU_CPUHP_STAT_INSERT) !=3D 0) { // // The "insert" event guarantees the "enabled" status; plus it exclu= des - // the "remove" event. + // the "fw_remove" event. // if ((CpuStatus & QEMU_CPUHP_STAT_ENABLED) =3D=3D 0 || - (CpuStatus & QEMU_CPUHP_STAT_REMOVE) !=3D 0) { + (CpuStatus & QEMU_CPUHP_STAT_FW_REMOVE) !=3D 0) { DEBUG ((DEBUG_ERROR, "%a: CurrentSelector=3D%u CpuStatus=3D0x%x: " "inconsistent CPU status\n", __FUNCTION__, CurrentSelector, CpuStatus)); @@ -260,12 +260,31 @@ QemuCpuhpCollectApicIds ( =20 ExtendIds =3D PluggedApicIds; ExtendCount =3D PluggedCount; - } else if ((CpuStatus & QEMU_CPUHP_STAT_REMOVE) !=3D 0) { - DEBUG ((DEBUG_VERBOSE, "%a: CurrentSelector=3D%u: remove\n", __FUNCT= ION__, + } else if ((CpuStatus & QEMU_CPUHP_STAT_FW_REMOVE) !=3D 0) { + // + // "fw_remove" event guarantees "enabled". + // + if ((CpuStatus & QEMU_CPUHP_STAT_ENABLED) =3D=3D 0) { + DEBUG ((DEBUG_ERROR, "%a: CurrentSelector=3D%u CpuStatus=3D0x%x: " + "inconsistent CPU status\n", __FUNCTION__, CurrentSelector, + CpuStatus)); + return EFI_PROTOCOL_ERROR; + } + + DEBUG ((DEBUG_VERBOSE, "%a: CurrentSelector=3D%u: fw_remove\n", __FU= NCTION__, CurrentSelector)); =20 ExtendIds =3D ToUnplugApicIds; ExtendCount =3D ToUnplugCount; + } else if ((CpuStatus & QEMU_CPUHP_STAT_REMOVE) !=3D 0) { + // + // Let the OSPM deal with the "remove" event. + // + DEBUG ((DEBUG_INFO, "%a: CurrentSelector=3D%u: remove (ignored)\n", = __FUNCTION__, + CurrentSelector)); + + CurrentSelector++; + continue; } else { DEBUG ((DEBUG_VERBOSE, "%a: CurrentSelector=3D%u: no event\n", __FUNCTION__, CurrentSelector)); @@ -281,10 +300,10 @@ QemuCpuhpCollectApicIds ( return EFI_BUFFER_TOO_SMALL; } QemuCpuhpWriteCommand (MmCpuIo, QEMU_CPUHP_CMD_GET_ARCH_ID); - NewApicId =3D QemuCpuhpReadCommandData (MmCpuIo); + OpApicId =3D QemuCpuhpReadCommandData (MmCpuIo); DEBUG ((DEBUG_VERBOSE, "%a: ApicId=3D" FMT_APIC_ID "\n", __FUNCTION__, - NewApicId)); - ExtendIds[(*ExtendCount)++] =3D NewApicId; + OpApicId, ExtendCount)); + ExtendIds[(*ExtendCount)++] =3D OpApicId; =20 // // We've processed the CPU with (known) pending events, but we must ne= ver diff --git a/OvmfPkg/Include/IndustryStandard/QemuCpuHotplug.h b/OvmfPkg/In= clude/IndustryStandard/QemuCpuHotplug.h index a34a6d3fae61..692e3072598c 100644 --- a/OvmfPkg/Include/IndustryStandard/QemuCpuHotplug.h +++ b/OvmfPkg/Include/IndustryStandard/QemuCpuHotplug.h @@ -34,6 +34,8 @@ #define QEMU_CPUHP_STAT_ENABLED BIT0 #define QEMU_CPUHP_STAT_INSERT BIT1 #define QEMU_CPUHP_STAT_REMOVE BIT2 +#define QEMU_CPUHP_STAT_EJECTED BIT3 +#define QEMU_CPUHP_STAT_FW_REMOVE BIT4 =20 #define QEMU_CPUHP_RW_CMD_DATA 0x8 =20 --=20 2.9.3 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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