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cd01672d64
Since userspace state is saved in the MM process, kernel using FPU still doesn't really need to do anything, so this really is as simple as enabling preemption. The irq critical section in sigio_handler() needs preempt_disable()/preempt_enable(). Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Link: https://patch.msgid.link/20240702102549.d2fcea450854.I12f5a53d80ec1e425e66ef272b1e95cb523b608e@changeid [rebase, remove FPU save/restore, fix x86/um Makefile, rewrite commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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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 reStructuredText 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.