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[88.28.25.32]) by smtp.gmail.com with ESMTPSA id k17-20020aa788d1000000b004f359a0a896sm10539599pff.169.2022.02.27.14.32.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Feb 2022 14:32:51 -0800 (PST) Message-ID: <02291ebd-a1e1-a670-0ba4-8e3d98c42b83@gmail.com> Date: Sun, 27 Feb 2022 23:32:47 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.6.1 Subject: Re: [PATCH v2 3/9] accel/tcg: Support TCG_TARGET_SIGNED_ADDR32 for softmmu Content-Language: en-US To: Richard Henderson , qemu-devel@nongnu.org References: <20220227020413.11741-1-richard.henderson@linaro.org> <20220227020413.11741-4-richard.henderson@linaro.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= In-Reply-To: <20220227020413.11741-4-richard.henderson@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::62a (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-pl1-x62a.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 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, NICE_REPLY_A=-0.001, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 27/2/22 03:04, Richard Henderson wrote: > When TCG_TARGET_SIGNED_ADDR32 is set, adjust the tlb addend to > allow the 32-bit guest address to be sign extended within the > 64-bit host register instead of zero extended. > > This will simplify tcg hosts like MIPS, RISC-V, and LoongArch, > which naturally sign-extend 32-bit values, in contrast to x86_64 > and AArch64 which zero-extend them. > > Signed-off-by: Richard Henderson > --- > accel/tcg/cputlb.c | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) Reviewed-by: Philippe Mathieu-Daudé