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509552e65a
We now set the pfn dirty and mark the page dirty before calling fault handlers in user_mem_abort(), so we might end up having spurious dirty pages if update of permissions or mapping has failed. Let's move these two operations after the fault handlers, and they will be done only if the fault has been handled successfully. When an -EAGAIN errno is returned from the map handler, we hope to the vcpu to enter guest directly instead of exiting back to userspace, so adjust the return value at the end of function. Signed-off-by: Yanan Wang <wangyanan55@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210114121350.123684-4-wangyanan55@huawei.com |
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| kernel | ||
| lib | ||
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| .cocciconfig | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.