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[173.198.77.218]) by smtp.gmail.com with ESMTPSA id 17-20020aa79111000000b005a852875590sm1609454pfh.113.2023.02.21.15.44.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Feb 2023 15:44:25 -0800 (PST) Message-ID: Date: Tue, 21 Feb 2023 13:44:22 -1000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 Subject: Re: [PATCH v4 1/4] util/cacheflush: fix cache on windows-arm64 Content-Language: en-US To: Pierrick Bouvier , qemu-devel@nongnu.org Cc: sw@weilnetz.de, kkostiuk@redhat.com, clg@kaod.org, alex.bennee@linaro.org, peter.maydell@linaro.org, philmd@linaro.org References: <20230221153006.20300-1-pierrick.bouvier@linaro.org> <20230221153006.20300-2-pierrick.bouvier@linaro.org> From: Richard Henderson In-Reply-To: <20230221153006.20300-2-pierrick.bouvier@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::529; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x529.google.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 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, NICE_REPLY_A=-0.095, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2/21/23 05:30, Pierrick Bouvier wrote: > ctr_el0 access is privileged on this platform and fails as an illegal > instruction. > > Windows does not offer a way to flush data cache from userspace, and > only FlushInstructionCache is available in Windows API. > > The generic implementation of flush_idcache_range uses, > __builtin___clear_cache, which already use the FlushInstructionCache > function. So we rely on that. > > Signed-off-by: Pierrick Bouvier > Reviewed-by: Richard Henderson > --- > util/cacheflush.c | 14 +++++++++++--- > 1 file changed, 11 insertions(+), 3 deletions(-) Queueing this to tcg-next. r~