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![]() On x86_64, all returns to usermode go through
prepare_exit_to_usermode(), with the sole exception of do_nmi().
This even includes machine checks -- this was added several years
ago to support MCE recovery. Update the documentation.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jon Masters <jcm@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes:
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.. | ||
i386 | ||
x86_64 | ||
amd-memory-encryption.rst | ||
boot.rst | ||
conf.py | ||
earlyprintk.rst | ||
entry_64.rst | ||
exception-tables.rst | ||
index.rst | ||
intel_mpx.rst | ||
kernel-stacks.rst | ||
mds.rst | ||
microcode.rst | ||
mtrr.rst | ||
orc-unwinder.rst | ||
pat.rst | ||
protection-keys.rst | ||
pti.rst | ||
resctrl_ui.rst | ||
tlb.rst | ||
topology.rst | ||
usb-legacy-support.rst | ||
zero-page.rst |