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[ Upstream commit 31e1b3efa802f97a17628dde280006c4cee4ce5e ] Register "a1" is unsaved in this function, when CONFIG_TRACE_IRQFLAGS is enabled, the TRACE_IRQS_OFF macro will call trace_hardirqs_off(), and this may change register "a1". The changed register "a1" as argument will be send to do_fpe() and do_msa_fpe(). Signed-off-by: YuanJunQing <yuanjunqing66@163.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.