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[147.11.176.192]) by smtp.gmail.com with ESMTPSA id 16-20020a621410000000b0050aca5f79f5sm1736067pfu.97.2022.04.20.01.20.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Apr 2022 01:20:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Hb3bq7oL126iOLWFWT8GvAlmoKeU1g46jYyc5j9GT2Q=; b=CJgRR67Fgxk06E3IyLXAgCV3RKL6lhr/zUBteqE3pbuCKRPYxvQGBoLYSxHtRQlsQf QuycqNdrRRC+YP9wAB6Sem0o072f6pAJbyftivIDgoyfA+vvj03GiuR69wUOSN59JpYp wUDYY5SBBqwugrUVQL2d15n/9UoxJ2wvYpDiGLmmXso/iObkluD0LaWN2Kl/zinwptRt i3CDR1tRyLxGTiphPnpRJHUBgER3uAEwsno1jOBzVxvJWd7aIIMVy/Bzmi5w2rCrc2Jf sCqqFzz1bzezc0ME6pUPOSegmAakHeQj4ubcYAcH4Pd8LOFKPjIvdwriY4hsOWPGDBE4 tk/Q== 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=Hb3bq7oL126iOLWFWT8GvAlmoKeU1g46jYyc5j9GT2Q=; b=TM7Rbrn8yGxWyYUgkCgHIU5TmDQF0WmCOvRdQVYehGe8YTn0TXtJf66RV4l5Vdb8Ln apyIJ0TWN1cCZVozaoIv+5oNKAK/SpFyopux/53e8cArnm74NFV6o1/m7eRPIdiV2+1J 29xhVqtGdYI40M7sDfmSx/0glJydnYtrPAEfK2SJb/2+2CP57OIOU1x5AeQq49IB+nQ4 U1aOz7ZliMf6daAXkq8j1MmUiil9ON0cGk7VBYHA7irWpLl/PTzzsremAci0pM4WW4Aj y7BPBw2fW5IMZH+bPCwPjElRIYLcV6OGXh2xw2ijZ+V5vMYeJIM/nJGrEJDqak+ROTtY OdRg== X-Gm-Message-State: AOAM533f5QMxhBgFCy2FAyL8qpk2DTuN2bjfsJZj/SUKM7TjLVRsavG7 YfCH5Z2eR34nLr8VPxGwXb8= X-Google-Smtp-Source: ABdhPJwwiuvrF/bRX6Sfqylv+s/JubhRJVnx8RUtFpapyJh8XlsHaO8eMZUf2sBWdjrq/ANGS47RRA== X-Received: by 2002:a05:6a00:711:b0:4fa:daf1:94c1 with SMTP id 17-20020a056a00071100b004fadaf194c1mr21912131pfl.52.1650442816583; Wed, 20 Apr 2022 01:20:16 -0700 (PDT) From: Bin Meng To: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Daniel Henrique Barboza , David Gibson , Greg Kurz , qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH] target/ppc: Fix BookE debug interrupt generation Date: Wed, 20 Apr 2022 16:20:06 +0800 Message-Id: <20220420082006.1096031-1-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.25.1 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::530; envelope-from=bmeng.cn@gmail.com; helo=mail-pg1-x530.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, FREEMAIL_FROM=0.001, 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: , Cc: Bin Meng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1650443168288100001 Content-Type: text/plain; charset="utf-8" From: Bin Meng Per PowerISA v2.07 [1], Book III-E, chapter 7.6 "Interrupt definitions" "When in Internal Debug Mode with MSR.DE=3D0, then Instruction Complete and Branch Taken debug events cannot occur, and no DBSR status bits are set and no subsequent imprecise Debug interrupt will occur." Current codes do not check MSR.DE bit before setting HFLAGS_SE and HFLAGS_BE flag, which would cause the immediate debug interrupt to be generated, e.g.: when DBCR0.ICMP bit is set by guest software and MSR.DE is not set. [1] https://ibm.ent.box.com/s/jd5w15gz301s5b5dt375mshpq9c3lh4u Signed-off-by: Bin Meng --- target/ppc/helper_regs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/ppc/helper_regs.c b/target/ppc/helper_regs.c index 9a691d6833..77bc57415c 100644 --- a/target/ppc/helper_regs.c +++ b/target/ppc/helper_regs.c @@ -63,10 +63,10 @@ static uint32_t hreg_compute_hflags_value(CPUPPCState *= env) =20 if (ppc_flags & POWERPC_FLAG_DE) { target_ulong dbcr0 =3D env->spr[SPR_BOOKE_DBCR0]; - if (dbcr0 & DBCR0_ICMP) { + if ((dbcr0 & DBCR0_ICMP) && msr_de) { hflags |=3D 1 << HFLAGS_SE; } - if (dbcr0 & DBCR0_BRT) { + if ((dbcr0 & DBCR0_BRT) && msr_de) { hflags |=3D 1 << HFLAGS_BE; } } else { --=20 2.25.1