From nobody Wed Dec 17 21:13:32 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29FA1C2FC24 for ; Thu, 17 Aug 2023 00:31:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347338AbjHQAbC (ORCPT ); Wed, 16 Aug 2023 20:31:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347336AbjHQAai (ORCPT ); Wed, 16 Aug 2023 20:30:38 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3118210F0 for ; Wed, 16 Aug 2023 17:30:37 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-589a45c1b0fso93463757b3.1 for ; Wed, 16 Aug 2023 17:30:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1692232236; x=1692837036; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=5WzKCvhVWsExbbkBqgjmP8R+v45VGDegN/7kG0ihAn0=; b=PZ3/GOZm9t8lBFHwWnUgx9kDAevNHEkCtnYgv/9aISsrBR+FRfc421K8zfhWwG0F1Z TaGHoAmhLwm37px7PqR6/QUXrSlnysmRhDFyoJXelmbm1ZuCxsX4u0AwXYpvgqYXS4Vu cdNWRqgad7TFa3PAVlF7iOrS4SaortFe85ZGJbB7LsGgTXxyJi9pgyhnPjMk55M6DeoW NGg+AgnCapkq61mr3/dDWy1ypTs2TsaCLGXvJzA602iNQm+eiHp3JJsNVvbSArDQXrpV +SsKkRT9m04KBNQklL6XrwrzipM4GxjonNKX+XriHBI5VBI3yIAX/UziCk2KLzYwcYdL 7RiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692232236; x=1692837036; 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=5WzKCvhVWsExbbkBqgjmP8R+v45VGDegN/7kG0ihAn0=; b=Q/qwY6EAay0T7f071QW71bVw02rYWOBGx4Oj/ckt/XhJ20MBSIXg1sWiQf7Ad+3oUH 5hMHRQgi0TLcTb1WfC2CqPz3D66l9YBLjIkd8gM1PtA5GOluKPch6jGX4en7CzZRf2eq vl80DAM7rOvzGkdUQ68DY9rJxIJ11PTdwOi/86Eq99cEfBGYoNZf1njadw78Cy27TUpm vUmwNo3sjxlvoT5RP7R6Uzn2N4gprbFtjuXiMv88d7A3QommsCZeoWjcNljFBzoJmyXl wLHNbc7fGTI6QE2c9Hnpglclka5VrrUpcHGpKEz1qnBTb3URKP1E0rfH+xdKFOAjzzoZ PuSQ== X-Gm-Message-State: AOJu0YwjscerDcJkSgPmnhqihFAyRmlaxs8DCiK1DS8HHLr0ZBBSTFo0 vpqedSLLisE0Ogi+6yuROBQoPZ5ou1Hh X-Google-Smtp-Source: AGHT+IHJmx2o/AjOqVUmGFuIH8g39Ni5Dd+TGMGoVeRs4jVJISVQQKSSwMp3clB56CLgHpeAZOan4BoJAgSv X-Received: from rananta-linux.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:22b5]) (user=rananta job=sendgmr) by 2002:a81:4411:0:b0:583:a3c1:6b5a with SMTP id r17-20020a814411000000b00583a3c16b5amr40767ywa.4.1692232236456; Wed, 16 Aug 2023 17:30:36 -0700 (PDT) Date: Thu, 17 Aug 2023 00:30:21 +0000 In-Reply-To: <20230817003029.3073210-1-rananta@google.com> Mime-Version: 1.0 References: <20230817003029.3073210-1-rananta@google.com> X-Mailer: git-send-email 2.41.0.694.ge786442a9b-goog Message-ID: <20230817003029.3073210-5-rananta@google.com> Subject: [PATCH v5 04/12] KVM: arm64: PMU: Don't define the sysreg reset() for PM{USERENR,CCFILTR}_EL0 From: Raghavendra Rao Ananta To: Oliver Upton , Marc Zyngier Cc: Alexandru Elisei , James Morse , Suzuki K Poulose , Paolo Bonzini , Zenghui Yu , Shaoqin Huang , Jing Zhang , Reiji Watanabe , Colton Lewis , Raghavendra Rao Anata , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Reiji Watanabe The default reset function for PMU registers (defined by PMU_SYS_REG) now simply clears a specified register. Use the default one for PMUSERENR_EL0 and PMCCFILTR_EL0, as KVM currently clears those registers on vCPU reset (NOTE: All non-RES0 fields of those registers have UNKNOWN reset values, and the same fields of their AArch32 registers have 0 reset values). No functional change intended. Signed-off-by: Reiji Watanabe Signed-off-by: Raghavendra Rao Ananta --- arch/arm64/kvm/sys_regs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 9d3d44d165eed..39e9248c935e7 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2178,7 +2178,7 @@ static const struct sys_reg_desc sys_reg_descs[] =3D { * in 32bit mode. Here we choose to reset it as zero for consistency. */ { PMU_SYS_REG(PMUSERENR_EL0), .access =3D access_pmuserenr, - .reset =3D reset_val, .reg =3D PMUSERENR_EL0, .val =3D 0 }, + .reg =3D PMUSERENR_EL0, }, { PMU_SYS_REG(PMOVSSET_EL0), .access =3D access_pmovs, .reg =3D PMOVSSET_EL0 }, =20 @@ -2336,7 +2336,7 @@ static const struct sys_reg_desc sys_reg_descs[] =3D { * in 32bit mode. Here we choose to reset it as zero for consistency. */ { PMU_SYS_REG(PMCCFILTR_EL0), .access =3D access_pmu_evtyper, - .reset =3D reset_val, .reg =3D PMCCFILTR_EL0, .val =3D 0 }, + .reg =3D PMCCFILTR_EL0, }, =20 EL2_REG(VPIDR_EL2, access_rw, reset_unknown, 0), EL2_REG(VMPIDR_EL2, access_rw, reset_unknown, 0), --=20 2.41.0.694.ge786442a9b-goog