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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id t15-20020a5d49cf000000b00230c9d427f9sm16520192wrs.53.2022.10.20.05.21.57 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Oct 2022 05:21:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=eg/e9A93ZkN84ceTSp5S7B+71lTnUk/jXFCDufUb9UM=; b=oDxAt+uRSUC0DL3cX5JpY6XOOZ9Qc5NCFb4JGuK+Y/R0AmMpyDXQiN6Xm1+ysKMhEb CXB6aQ1yv1ANk85Y/G0rORnu3BpjJLsbIRoPDgqtPLiyAxWhY9tU1rI1jasiTfXsYX6p ubHt1ejyWvudXIGIb0UJkrEJINqwyBmDWqMwiiWBS299PyXB9dgoekbNq6CfTvxfQTmL 0KsvNJLWsQWkOFJ+/wM+34w2QJdDwTX/0QqBFjxUKvJlkOXv4eO7iFoS0oHxaueg6ndb cvBZG7v1IYXHIzV3900qWPo3LFtFahTEr1Kt7oAp7Nfb17KXzUn9mrcgeU3SnfAWey2o UFqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eg/e9A93ZkN84ceTSp5S7B+71lTnUk/jXFCDufUb9UM=; b=Xiz8gGDTovRlsxRb/G/M2E3bRlY7NUNXVk9DM7j3S/mSj1U3z0vekCobyvZhRbXmhX 6AcCiLJEN3SxdBzBoqUVT+KVHt8np1Bk94mdXVdLX0ct+BzHYshY2c8PxsycDRBhTO96 7O4flt8OT4wg5RsgilpDhodfmQcEu4MPFfzIpF7PBN/1QuIctnuDpS/REyduRgkOK6C2 uvzE9wNIt2Iob6vZB6byvno87sYT7hlTtLxK2IinX1x7wyh924ICXzzd7y8PT0r2C5nS 1EbzOJ7LSs+uu6sbD4VGUITyJkZenkNY/RbYb02jArn8tUiEMkVf5TyrtzYRLxgTM19l ms4g== X-Gm-Message-State: ACrzQf3mGyWpsHbVNf3qYrwaiUcu2C1eGjB5MgWdNeRyw/rUztiDQij2 Don+GxD4Xbdypxp9SQkdW7T5Zao1ydmoaw== X-Google-Smtp-Source: AMsMyM7HAnzrd9JNR4+TDMhGyKVVEaAT6RyNFrhA8k3qaXHUeWG1jJYsDIGTJmPZtFMZRrUdIzJI2g== X-Received: by 2002:a5d:5689:0:b0:231:bcaa:3125 with SMTP id f9-20020a5d5689000000b00231bcaa3125mr8835423wrv.431.1666268518930; Thu, 20 Oct 2022 05:21:58 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 08/24] target/arm: Restrict tlb flush from vttbr_write to vmid change Date: Thu, 20 Oct 2022 13:21:30 +0100 Message-Id: <20221020122146.3177980-9-peter.maydell@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221020122146.3177980-1-peter.maydell@linaro.org> References: <20221020122146.3177980-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::429; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x429.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=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" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1666277685875100001 Content-Type: text/plain; charset="utf-8" From: Richard Henderson Compare only the VMID field when considering whether we need to flush. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell Message-id: 20221011031911.2408754-7-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 18c51bb7774..c672903f432 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -3815,10 +3815,10 @@ static void vttbr_write(CPUARMState *env, const ARM= CPRegInfo *ri, * A change in VMID to the stage2 page table (Stage2) invalidates * the stage2 and combined stage 1&2 tlbs (EL10_1 and EL10_0). */ - if (raw_read(env, ri) !=3D value) { + if (extract64(raw_read(env, ri) ^ value, 48, 16) !=3D 0) { tlb_flush_by_mmuidx(cs, alle1_tlbmask(env)); - raw_write(env, ri, value); } + raw_write(env, ri, value); } =20 static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] =3D { --=20 2.25.1