From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9F0E0C77B7A for ; Tue, 6 Jun 2023 17:04:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=/FGgtrMIJbctTJRHW65QbgnDiBVbAHiZ2fzmnVcV3A4=; b=l3wjz1j3Q/WN9gEdv8LB0JLgES thYvx4tuR4bl7ivk2wn0GKq8GqmSP2rzfnpD47PlAb8RSstnyVB+3AIFjHYflpzj4lpKK9aokGui1 RtFf8l0bSXq/i6hNw2EU2i+v9A9L53hleoCVwFUR3gBuqZd8LOnWryZ7AECFWHb5NgXkLPZyRyJZz 2aoKaFea+3NAE1qdG723Y2YbQ2157xPtvtKkYa0nDp6nK22YjYDIkQWSWq28Rdetw5ZWKpbII8XOF EEnQDMuZI14XMzIQ/2vx+DszU7h6J6njUg21yEB3We2AU5ZAjJJeL0b5akEBE4vY7gVwwxEuhOum/ 1AN2vLug==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q6a6X-002Wl1-0c; Tue, 06 Jun 2023 17:04:21 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q6a6U-002Wk5-1j for linux-arm-kernel@lists.infradead.org; Tue, 06 Jun 2023 17:04:19 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-bb39aebdd87so1652390276.0 for ; Tue, 06 Jun 2023 10:04:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1686071054; x=1688663054; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=V8qzwnilU7CBlAyrORrX+Rq/xc7XcjCZI3HBcrsSReA=; b=AHguQPaCli0Z6Kk+CO5rYFKKfQWZY0OhpKc5L71HVklmdkvCAO1wmDuyVEKmh9ewUU ZgcNzq7xdni1a3CtugomLcW1MAII4596bWnto4+D2qqcJMKr8v3+RiRZqaYxWGrITiKm rkGNCX6ed2Fkxt9vXgOPTcvkD4SeXKKOA3SAS3b0kf65oyUIrb10oZ0EBGciPjhcmLL+ e9oArNo6WBao2TwmmH/+9C754jWjiV2QJzHYOUSQUdnIrKtz/7CiM6scXZ4Bs0yc+JFh IBuIq0PfbvSQJJboJee8nSpLJM/xi9r2FM0kQUSvVbSSJb+yDeOq59lT6kOXYeMLh0bj OUTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686071054; x=1688663054; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=V8qzwnilU7CBlAyrORrX+Rq/xc7XcjCZI3HBcrsSReA=; b=d7ezR3vqTFry0jOxu0GuOkLr/fyFqKzf03/qqIcvRB7Wcm4jsMs8hjFKn9/2sIrIyf JkFcj0IDoecQYlztjFlKJO1XqzaZ1JpilXXZzJoAxHcfPeuZB/XUHPRX6JA9r7mv+hGo csOCx0BoYruRUFmftlC7vtRfveoZDCzxWOHxFEp3dDRiUc4qSHj38v2XiNAGqOtlpVPY OHbXQOQRqv/KT1vgHZXxnnhYQYRn//k7iZMqznwOZPqkt+R+FPB2kD87VVjqyO6ub2WJ 7xFJSMikGvKUDQV2a9+bOnhY1dWNd0ypDV3uquGydzbq5Jlg8cRvIYzbvU/w7giHt6ZB 95fQ== X-Gm-Message-State: AC+VfDz9S7lL13hmUKfOUkXCDD4nZh8bMIEyphyLnmWAyMtOjTsi7gUB t+YbAENbjGhGYnMwsuVWVyGRgrg4n/M= X-Google-Smtp-Source: ACHHUZ4qZcjvSUYMxKH7ZqKK5jG3I1bcHk8c4YCSNi3BAUw5BflMSXSLu5LCw/yiBxYmezusTpkyPX7rEy0= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a25:f50d:0:b0:bb1:ca0e:29a0 with SMTP id a13-20020a25f50d000000b00bb1ca0e29a0mr1657054ybe.0.1686071054799; Tue, 06 Jun 2023 10:04:14 -0700 (PDT) Date: Tue, 6 Jun 2023 10:04:13 -0700 In-Reply-To: Mime-Version: 1.0 References: <2f16f83e-ed60-fcb7-7f3d-0fa216c41cb9@redhat.com> Message-ID: Subject: Re: [PATCH] KVM: arm64: Fix smp_processor_id() call in preemptible context From: Sean Christopherson To: Oliver Upton Cc: Sebastian Ott , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Marc Zyngier X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230606_100418_595795_F8EFD63E X-CRM114-Status: UNSURE ( 9.06 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jun 06, 2023, Oliver Upton wrote: > On Tue, Jun 06, 2023 at 03:46:09PM +0000, Sean Christopherson wrote: > > I.e. can't you just do? > > No, this would break the 'old' ABI, but if we decide to deliberately > break it I prefer your suggestion over using CPU0. Ah, if userspace pins the task when doing KVM_ARM_VCPU_PMU_V3_CTRL, then factoring in the pCPU matters. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel