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[88.21.201.17]) by smtp.gmail.com with ESMTPSA id y2sm939170ejf.30.2021.04.09.02.36.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Apr 2021 02:36:25 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [RFC PATCH-for-6.1 v2 0/6] target/mips/cp0_timer: Use new clock_ns_to_ticks() Date: Fri, 9 Apr 2021 11:36:17 +0200 Message-Id: <20210409093623.2402750-1-f4bug@amsat.org> X-Mailer: git-send-email 2.26.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::630; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-ej1-x630.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 , Aleksandar Rikalo , Luc Michel , Huacai Chen , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Hao Wu , Aurelien Jarno Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Since v1:=0D - Fix clock_has_source()=0D - Split patch to be more digestible=0D - Raise loongson3_virt/TCG clock=0D =0D This series uses the recently introduced clock_ns_to_ticks()=0D function which "tells me how many times this clock would tick=0D in this length of time" to simplify the MIPS CP0 R4K timer=0D logic and remove the restriction to use frequencies >=3D 1GHz.=0D =0D Still RFC because we could rethink the MIPS CP0 timer logic=0D to avoid too frequent divu128 calls (painful on 32-bit hosts).=0D =0D Also, env_archcpu() could eventually be dropped (by passing=0D MIPSCPU* instead of CPUMIPSState*).=0D =0D Still, enough for a first step cleanup.=0D =0D Regards,=0D =0D Phil.=0D =0D Philippe Mathieu-Daud=C3=A9 (6):=0D target/mips/cpu: Use clock_has_source() instead of clock_get()=0D target/mips/cpu: Update CP0 clock when CPU clock is propagated=0D target/mips/cp0_timer: Add ns_to_count() helper=0D target/mips/cp0_timer: Add ns_substract_to_count() helper=0D target/mips/cp0_timer: Use new clock_ns_to_ticks()=0D hw/mips/loongson3_virt: Raise CPU clock to 2 GHz=0D =0D target/mips/cpu.h | 1 -=0D hw/mips/loongson3_virt.c | 2 +-=0D target/mips/cp0_timer.c | 45 ++++++++++++++++++++++++++++++++--------=0D target/mips/cpu.c | 15 +++-----------=0D 4 files changed, 40 insertions(+), 23 deletions(-)=0D =0D -- =0D 2.26.3=0D =0D