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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id me3sm164189pjb.32.2021.02.09.16.02.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Feb 2021 16:02:48 -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=PjicE7DhBsN4Sm+TSOb8KXSIz6Ok4GKYojVAov9pqKE=; b=CB0Kse17yz7ThVR+YYEeb/GvU8u8xBocx9tEg/4ZZzbDYrXZ7YGclu0Erj6+2bKPFs Omna6U0+omL3BtSOFFktP86prgXyMUO63hixeu5HZqtkNuywNphgclA7bYKGNMZzALcb UkNGTluL3MNBDDtSDEicRcS81EE4MLibolP1mT/DNtTvR/uUyl1jcBqfkCFHu4ErWPhH NluB9SKTmLvH4DDKG+tTaVCJ7EFGRn/DUDuTh2612kR5k0dbxOSMDeMXsysw3reGGhJv ypCVcROVc2Mza9+E43vDiFevaW6NokLdOwEkOhsNVtp0fn/KEHvIgQkz7Mtcbffe3ExL 0Ngw== 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=PjicE7DhBsN4Sm+TSOb8KXSIz6Ok4GKYojVAov9pqKE=; b=EgjoNQ0lUO7uVrsxhcEdAf5r4ozqW0lewTVYIoX91+dVQT0b7GT38cMQZXuVFrUrcW A82mnzxXCK8fOdOPW6ZTNIjdt+JZs0BaTECjffeo3SmMtIRq5B05VgRGgUnxhixYhqPR sw6H66iWDrrPY+O5/18Mi+b8nCWva+QJF9QbVEmEQWCBhT/8YrnzHAzwRDwXr5+UD5LJ XOXviAvI+EKuWbDDgztWyCkbXPNUWUyLOXUxa7wuqL/Pt6VAX5uILN8YPDfkxty7W7EO xcxcHIJgS7Ts9Sy0P4xMPcjQvEraFJt07xxcGpT9gOJPM+cwlt6kOLNNdTgjSRS5SSID bRTQ== X-Gm-Message-State: AOAM531c3ooj7vD23juX+SaJ2wNHdThFgYHS3NQA/9ZMhxeDlM/TCWu5 IRoTr0AyDxUdULlo2G2T4yD87p1e8BP/+w== X-Google-Smtp-Source: ABdhPJy75dYGErJ+7lSjKTJGbDO1IaUVUoGQtF+UF1Xa7gIVNt3wlJIDfhVLcJ5d19NxKay+Kp8g4A== X-Received: by 2002:a17:90a:ca8d:: with SMTP id y13mr388628pjt.76.1612915368830; Tue, 09 Feb 2021 16:02:48 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v6 19/31] linux-user: Handle tags in lock_user/unlock_user Date: Tue, 9 Feb 2021 16:02:11 -0800 Message-Id: <20210210000223.884088-20-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::1033; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1033.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" Resolve the untagged address once, using thread_cpu. Tidy the DEBUG_REMAP code using glib routines. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- linux-user/uaccess.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/linux-user/uaccess.c b/linux-user/uaccess.c index 76af6a92b1..c696913016 100644 --- a/linux-user/uaccess.c +++ b/linux-user/uaccess.c @@ -6,36 +6,37 @@ =20 void *lock_user(int type, abi_ulong guest_addr, size_t len, bool copy) { + void *host_addr; + + guest_addr =3D cpu_untagged_addr(thread_cpu, guest_addr); if (!access_ok_untagged(type, guest_addr, len)) { return NULL; } + host_addr =3D g2h_untagged(guest_addr); #ifdef DEBUG_REMAP - { - void *addr; - addr =3D g_malloc(len); - if (copy) { - memcpy(addr, g2h(guest_addr), len); - } else { - memset(addr, 0, len); - } - return addr; + if (copy) { + host_addr =3D g_memdup(host_addr, len); + } else { + host_addr =3D g_malloc0(len); } -#else - return g2h_untagged(guest_addr); #endif + return host_addr; } =20 #ifdef DEBUG_REMAP void unlock_user(void *host_ptr, abi_ulong guest_addr, size_t len); { + void *host_ptr_conv; + if (!host_ptr) { return; } - if (host_ptr =3D=3D g2h_untagged(guest_addr)) { + host_ptr_conv =3D g2h(thread_cpu, guest_addr); + if (host_ptr =3D=3D host_ptr_conv) { return; } if (len !=3D 0) { - memcpy(g2h_untagged(guest_addr), host_ptr, len); + memcpy(host_ptr_conv, host_ptr, len); } g_free(host_ptr); } --=20 2.25.1