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Thu, 5 Jun 2025 15:30:18 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id eKWPJQq4QWj3XwAAD6G6ig (envelope-from ); Thu, 05 Jun 2025 15:30:18 +0000 From: Thomas Zimmermann To: mhklinux@outlook.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@gmail.com, simona@ffwll.ch, drawat.floss@gmail.com, javierm@redhat.com, kraxel@redhat.com, louis.chauvet@bootlin.com, hamohammed.sa@gmail.com, melissa.srw@gmail.com, fvogt@suse.com Cc: dri-devel@lists.freedesktop.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, Thomas Zimmermann Subject: [PATCH 4/6] drm/bochs: Use vblank timer Date: Thu, 5 Jun 2025 17:24:42 +0200 Message-ID: <20250605152637.98493-5-tzimmermann@suse.de> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250605152637.98493-1-tzimmermann@suse.de> References: <20250605152637.98493-1-tzimmermann@suse.de> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-1.51 / 50.00]; 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ASN(0.00)[asn:25478, ipnet:::/0, country:RU]; FREEMAIL_ENVRCPT(0.00)[gmail.com,outlook.com] X-Spam-Level: X-Spam-Flag: NO X-Rspamd-Queue-Id: 14EB833750 X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Score: -1.51 Bochs' virtual hardware does not provide vblank interrupts. Use a vblank timer to simulate the interrupt in software. Rate-limits the display's update frequency to the display-mode settings. Avoids excessive CPU overhead with compositors that do not rate-limit their output. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/tiny/bochs.c | 68 ++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c index 8706763af8fb..dbc6a15c1a58 100644 --- a/drivers/gpu/drm/tiny/bochs.c +++ b/drivers/gpu/drm/tiny/bochs.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include #include