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[174.21.142.130]) by smtp.gmail.com with ESMTPSA id l18-20020a056a00141200b004f75395b2cesm18258153pfu.150.2022.03.13.21.43.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Mar 2022 21:43:06 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 0/3] linux-user/arm: Improvements for commpage atomics Date: Sun, 13 Mar 2022 21:43:02 -0700 Message-Id: <20220314044305.138794-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::632 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x632.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, 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: , Cc: qemu-arm@nongnu.org, laurent@vivier.eu Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Only the memory_barrer one is a bug; the rest improve system-wide interaction, and would only affect pre-armv6. r~ Richard Henderson (3): linux-user/arm: Implement __kernel_memory_barrier linux-user/arm: Implement __kernel_cmpxchg with host atomics linux-user/arm: Implement __kernel_cmpxchg64 with host atomics linux-user/arm/cpu_loop.c | 166 +++++++++++++++++++++++--------------- 1 file changed, 99 insertions(+), 67 deletions(-)