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Once the Windows guest is shutdown, the display pipe will be disabled and intel_gvt_check_vblank_emulation will be called to check if the vblank timer is turned off. Given the scenario of creating VM1 ,VM2, destoying VM2 in current code, VM1 has pipe enabled and continues to check VM2, the flag have_enabled_pipe is always false since all the VM2 pipes are disabled, so the vblank timer will be canceled and TDR happens in Windows VM1 guest due to the vsync timeout. In this patch the vblank timer will be never canceled once one pipe is enabled. v2: - remove have_enabled_pipe flag and check pipe enabled directly. (Zhenyu) Cc: Wang Hongbo <hongbo.wang@intel.com> Signed-off-by: fred gao <fred.gao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.