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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id me3sm164189pjb.32.2021.02.09.16.02.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Feb 2021 16:02:41 -0800 (PST) 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=ACfOE8SVSBgg4JpZZoxjcwYfYXJzG1xX3fS2kxeRIKY=; b=oXFQGVTBGmMulxULHJOhwbvTSOAbOepL4D79jf3q4LtOoUpp4NLKglDx+r4MHMhmzM RiR3EbF6LygfYXCgEcZ8KPyiEh6pISm33jMfodAwy1ONVwdSR3k6Kdvs+2QChPrz775w EPRQPzd1HM+v+SFREQ6L47d3fOG4gbehCcKSGoip7m/H5m5xIjoVdjm1qoQFtxirPYCz KYGPJhf3Uo3TCHi+B+N/MMaIHLZ1GQEh8KT7rxj+E3UcVUSamuGOzykJSXItlGDGAvs3 DcOwgo7K9nwQ4tQjhxI2o4/r5iH8hg8a7hFFntMGE18h5vfd0vKt/epIXH0sZuNgoCqk opGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ACfOE8SVSBgg4JpZZoxjcwYfYXJzG1xX3fS2kxeRIKY=; b=RB7axKYAHVQXVT6Jyf60e5Z3t1jPSwJ6KHkiLdAzcfLkuXHYnf8KyCXWTx/gZZbr2n Rt2LgLz6V8YOrsahVvrWyCJasbmsqv6DY0R20KfbdpO1CzdaqELzIefF77xyqkOzTPKM XzbnO5ehiggbEFYbXlCYHUz+5jC//dK9rkasV8lWT1nhfqWYXhItuf8MzU2YY8l3h51z oRn/TVXGKdYwiBhk3BpVEbuinruUDTguW9z9FMAf4JLslsoqVPyGUZkdr5iAdNGCQG9R k78dyyPlYNMvw/x7zxMLZdNj3KtQMm3tV605OUfJ5DZ4R27eW9N8hlZxd7ly2WJuzLJH zL1g== X-Gm-Message-State: AOAM533tCR9anyFP4l2W+llYktkrCln5bF3WxlQtTJfFGuTssiU7IrGs P3wkWs4Q7u4GrrzOHcHxYCr33SdRBBnbJg== X-Google-Smtp-Source: ABdhPJwiQta00IHmkPN/oXS7O0CNJBAaaXu47DBGTuNWWgP6rUJfhcxdggRkN6BbmYP2GJyvG+vEvQ== X-Received: by 2002:a17:90a:474f:: with SMTP id y15mr381230pjg.110.1612915362349; Tue, 09 Feb 2021 16:02:42 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v6 14/31] linux-user: Use guest_range_valid in access_ok Date: Tue, 9 Feb 2021 16:02:06 -0800 Message-Id: <20210210000223.884088-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210210000223.884088-1-richard.henderson@linaro.org> References: <20210210000223.884088-1-richard.henderson@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=2607:f8b0:4864:20::1034; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1034.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We're currently open-coding the range check in access_ok; use guest_range_valid when size !=3D 0. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/qemu.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 9fbc5edc4b..ba122a7903 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -493,12 +493,9 @@ extern unsigned long guest_stack_size; =20 static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { - if (!guest_addr_valid(addr)) { - return false; - } - if (size !=3D 0 && - (addr + size - 1 < addr || - !guest_addr_valid(addr + size - 1))) { + if (size =3D=3D 0 + ? !guest_addr_valid(addr) + : !guest_range_valid(addr, size)) { return false; } return page_check_range((target_ulong)addr, size, type) =3D=3D 0; --=20 2.25.1