From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by spool.mail.gandi.net (Postfix) with ESMTPS id 157F9D807AB for ; Thu, 3 Aug 2023 17:02:36 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=XNAfS6RKlEYKmWuambyhEgniU8+IjckcSS0WCY8DSZg=; c=relaxed/simple; d=groups.io; h=Message-ID:Date:MIME-Version:User-Agent:Subject:To:CC:References:From:In-Reply-To:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Language:Content-Type:Content-Transfer-Encoding; s=20140610; t=1691082155; v=1; b=CNggGENDUtnr+WR6T6PQSbCE+yh+SaZsIk7fxhktD46+vxziKNhPzVQdJoW35ABvYdMegtdv CyWJVl+TBDSPPOBb5egFFQ7aGv/QfLwmy1wYfWAArrReqLcyQec9AvBOUAtJBD7QXE+f35XJm4q 8NgXGR4uD+FHDtqzx2K/HLbI= X-Received: by 127.0.0.2 with SMTP id vL19YY7687511xuUTuUxKR7C; Thu, 03 Aug 2023 10:02:35 -0700 X-Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by mx.groups.io with SMTP id smtpd.web10.20126.1691082155026051763 for ; Thu, 03 Aug 2023 10:02:35 -0700 X-Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 373FeiYl001580; Thu, 3 Aug 2023 17:02:32 GMT X-Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s7vtvah5r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 03 Aug 2023 17:02:31 +0000 X-Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 373H2V2O010591 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 3 Aug 2023 17:02:31 GMT X-Received: from [10.111.141.248] (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Thu, 3 Aug 2023 10:02:29 -0700 Message-ID: Date: Thu, 3 Aug 2023 18:02:27 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [edk2-devel] [PATCH v1 0/3] Add support for handling SGI and pending interrupts To: , , Kun Qin CC: Sami Mujawar References: <20230724201523.852-1-kuqin12@gmail.com> <3b648d9d-ddab-ba72-dd1e-e84f32c84f7e@gmail.com> From: "Leif Lindholm" In-Reply-To: X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-GUID: n87_Q4R4s-UYvl86y4oU1mTnEf-Hfwus X-Proofpoint-ORIG-GUID: n87_Q4R4s-UYvl86y4oU1mTnEf-Hfwus Precedence: Bulk List-Subscribe: List-Help: 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,quic_llindhol@quicinc.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: ZPxHN3Lrk3Xpnty2EhLWLFGgx7686176AA= Content-Language: en-GB Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: quoted-printable X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=CNggGEND; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io; dmarc=fail reason="SPF not aligned (relaxed), DKIM not aligned (relaxed)" header.from=quicinc.com (policy=none) On 2023-08-03 16:33, Ard Biesheuvel wrote: > On Wed, 26 Jul 2023 at 20:45, Kun Qin wrote: >> >> Hi Ard, >> >> Our current use case is around AP core suspension and wake-ups. >> >> The program can suspend the secondary cores through PSCI interfaces >> (after powering >> them on). BSP can then wake up the suspended cores through SGI on demand= . >> >=20 > The use of PSCI is already dubious in the context of UEFI - combining > it with the use of SGIs for communication between cores seems like a > slippery slope I don't think we should be going down. Well, UEFI has no concept of multiple cores, so I don't think there's=20 anything fishy about using PSCI to bring up/down APs. But I agree adding=20 interrupt support, not considered by either UEFI nor PI, feels off. What is the fundamental use-case? (Pre-)silicon testing? / Leif -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107554): https://edk2.groups.io/g/devel/message/107554 Mute This Topic: https://groups.io/mt/100337221/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/leave/12367111/7686176/19134562= 12/xyzzy [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-