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([122.255.60.245]) by smtp.gmail.com with ESMTPSA id s3-20020a170902c64300b0016a61301293sm11997060pls.212.2022.06.29.20.16.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jun 2022 20:16:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bXcV7WzdJB6v6tRs5Y7JbMW0b+6unrNcPOHqTvkpgwc=; b=n8ebV8fixtqYIBNwfl3l3NaghidRUTQLGITrRS2N2pFyRcR5UKYYp+kFvHmhxGpLcX QKfkNnDOI5R/iABQTCA0mCC0qbiVu5HPtzn6pARaW1Zv67/NexUNvOWCmwIaSs8pJ80C IIr5H+iTaW7f+XEewIDTT+HmiRijXX1QlNu+FRlhgFIrGM7q5FFDPUo6Pg4FbnbvMgBW yiUumD6QuQUA3ddOv6RRgrYn1beIZeEy9CEPhgwfltkuR0lVm9oMpsJpspU1L+GJxAg7 VKlv6BFbXSx2X35n0GQjFdQVCYySqy4OnwEjPp0q2K1N+J7QXDuaPd23Eg7+cGImCcCU DqXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bXcV7WzdJB6v6tRs5Y7JbMW0b+6unrNcPOHqTvkpgwc=; b=yNHTXNtyZZbamQPsQ47WcbPA/8MB65A0fiO0mZW6to6XMvI6REqqK0kypECTgnFaSq IhquGpxEm958gvg2CTJm5YYkQ0ZjEV436xIP7anPVKosDcRKXFI2qxX3pzm2wu/DUlCJ xJtR6Yn6D3xx/nntXJ5/aBWBSN20DiSno75qXgry5zeS9qVVqHW0d55F/jBadBRP9zNq +n3wloXTKgqSJDg6Cv3gfdo8WxSF6XDSRKDyCPDk1uClTtdhdXr0uy9Wc3VAI6p4zp+w 0xCJ6xW0RfPtTDq8jK8QGCEjg9cXhXgX6tX5cnsvkYU4WtDo/9O/4R2vS79QaRZd02mU 1sgw== X-Gm-Message-State: AJIora/8F0v0UsJpOGxcfGHRcClyY6Ff1PCnleA+v0xVdfY9BepOW7Vu sOe6mUDIOMGFlX6i/fg9HKYf2Ac7A3Q6DDgk X-Google-Smtp-Source: AGRyM1sJJ0XbxTmdiUbxU53e/ubdQf6X9cqWSFSnsGwtM5VcyWRhXDWvBOfURwCwWI9Siu+h0X0OzA== X-Received: by 2002:aa7:8895:0:b0:525:79c8:eb6a with SMTP id z21-20020aa78895000000b0052579c8eb6amr13176113pfe.35.1656559003059; Wed, 29 Jun 2022 20:16:43 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, Sven Schnelle Subject: [PATCH] target/s390x: Exit tb after executing ex_value Date: Thu, 30 Jun 2022 08:46:35 +0530 Message-Id: <20220630031635.271353-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 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=2607:f8b0:4864:20::42a; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42a.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, T_SCC_BODY_TEXT_LINE=-0.01 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: 1656559092928100001 Content-Type: text/plain; charset="utf-8" When EXECUTE sets ex_value to interrupt the constructed instruction, we implicitly disable interrupts so that the value is not corrupted. Exit to the main loop after execution, so that we re-evaluate any pending interrupts. Reported-by: Sven Schnelle Signed-off-by: Richard Henderson --- Hi Sven. Will you test this vs your testcase? Thanks, r~ --- target/s390x/tcg/translate.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index fd2433d625..e52c2a4a6f 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -6620,11 +6620,18 @@ static void s390x_tr_translate_insn(DisasContextBas= e *dcbase, CPUState *cs) =20 dc->base.is_jmp =3D translate_one(env, dc); if (dc->base.is_jmp =3D=3D DISAS_NEXT) { - uint64_t page_start; - - page_start =3D dc->base.pc_first & TARGET_PAGE_MASK; - if (dc->base.pc_next - page_start >=3D TARGET_PAGE_SIZE || dc->ex_= value) { - dc->base.is_jmp =3D DISAS_TOO_MANY; + if (unlikely(dc->ex_value)) { + /* + * Because ex_value was set, s390_cpu_exec_interrupt may + * have skipped an interrupt. Exit to the main loop to + * re-evaluate interrupts, as we do for LCTL. + */ + dc->base.is_jmp =3D DISAS_PC_STALE_NOCHAIN; + } else { + uint64_t page_start =3D dc->base.pc_first & TARGET_PAGE_MASK; + if (dc->base.pc_next - page_start >=3D TARGET_PAGE_SIZE) { + dc->base.is_jmp =3D DISAS_TOO_MANY; + } } } } --=20 2.34.1