x86/entry_32: Remove .fixup usage
[ Upstream commit
a83e73a18cdaf0d85af97d877098fc852b7bcb6d ]
Where possible, push the .fixup into code, at the tail of functions.
This is hard for macros since they're used in multiple functions,
therefore introduce a new extable handler to pop zeros.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20211110101325.245184699@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>