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[172.254.253.57]) by smtp.gmail.com with ESMTPSA id bm25sm12730854qkb.4.2021.11.02.04.11.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Nov 2021 04:11:15 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=G7SBr/WksrEb3wfGw9+4/7HGKeZrYxUMshTizcIBHp0=; b=hwOxAJR38Bn8SzPMelDs0iP37VCMq+iC6HOQ5gkLmtWP4rYNod0JUbgYV83t8YKTk3 /+oGZzj+xTGXGeJuoMSHeYv+/QlPrmsJ5YodSrU3t7YHra/+OOfJA2XG9DTW1ofItvRz NjXs4dpzXzJrtakD9nr2yy76JlWzNsj/7FhB4SnJoj0FbnehR2/dguF39xfkbK/jLWLD IhwfL+iUkKnb52KJNcfT49xcqVizw5mQ5vuI/tAWsD3wShsPXEiesgJK9eoYHsyPO+ya BxPk8NTlIPtCMNsxZ8o6QEch5IIjHmIk9af/Qw7GmGQMFpr3+CGf+3ikwrdnjVbyX8Ap ROeg== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=G7SBr/WksrEb3wfGw9+4/7HGKeZrYxUMshTizcIBHp0=; b=iMkgzXdWZwbTgRggwy8wbeIGgcdVRFNwRUZWqI+dPvoq9jrLBHKQkz/s42ug2aU48m /iBwswlL4/LznSJvVuFJLV4DpfVw82o8n1d2c8wHxDXeiVLltG8UrnE9Y38J68Inapwv xF5rqIRwIyw3H7tJnc8VXz9w+D2sY/VVtanOu+Eh5zkPzYi7iBJGGWYoL9r6EljEvxGp m/eHTdOB96+gwOXLdFSpZLRXsN3XZkDGy6mE3vcVDXcz9bxKdoY7qo516HFHhnLQiwZ9 KWNVu49Xh6ENOuG7vUJGU3VFNq425Me2wmJTA1mrEw/gx/m7P06eXHyeNk7qQRZQFdFa 93dQ== X-Gm-Message-State: AOAM5315AvZVsublBL/VczFJfDWfT7bhuTeBoaSp5EkYGQTtkAODfiNs H9ErNf9VpZLEyh4d/XR+BcGYswH8dKAKeQ== X-Google-Smtp-Source: ABdhPJwCSlh3cxeorN4fHXa7Hk4OokZF1NzPd0aaN+Q88C1VR7xiYHnBcopmfjvvLYZBM3qwoG87xw== X-Received: by 2002:a05:622a:1313:: with SMTP id v19mr5966344qtk.340.1635851475740; Tue, 02 Nov 2021 04:11:15 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 57/60] accel/tcg: Report unaligned atomics for user-only Date: Tue, 2 Nov 2021 07:07:37 -0400 Message-Id: <20211102110740.215699-58-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211102110740.215699-1-richard.henderson@linaro.org> References: <20211102110740.215699-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::82d; envelope-from=richard.henderson@linaro.org; helo=mail-qt1-x82d.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: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Warner Losh Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1635854067551100001 Use the new cpu_loop_exit_sigbus for atomic_mmu_lookup, which has access to complete alignment info from the TCGMemOpIdx arg. Reviewed-by: Warner Losh Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- accel/tcg/user-exec.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index c4f69908e9..1ee64f01fc 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -474,11 +474,22 @@ static void *atomic_mmu_lookup(CPUArchState *env, tar= get_ulong addr, MemOpIdx oi, int size, int prot, uintptr_t retaddr) { + MemOp mop =3D get_memop(oi); + int a_bits =3D get_alignment_bits(mop); + void *ret; + + /* Enforce guest required alignment. */ + if (unlikely(addr & ((1 << a_bits) - 1))) { + MMUAccessType t =3D prot =3D=3D PAGE_READ ? MMU_DATA_LOAD : MMU_DA= TA_STORE; + cpu_loop_exit_sigbus(env_cpu(env), addr, t, retaddr); + } + /* Enforce qemu required alignment. */ if (unlikely(addr & (size - 1))) { cpu_loop_exit_atomic(env_cpu(env), retaddr); } - void *ret =3D g2h(env_cpu(env), addr); + + ret =3D g2h(env_cpu(env), addr); set_helper_retaddr(retaddr); return ret; } --=20 2.25.1