3.16.55-rc1 review patch. If anyone has any objections, please let me know.
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From: David Woodhouse dwmw@amazon.co.uk
commit b9e705ef7cfaf22db0daab91ad3cd33b0fa32eb9 upstream.
Where an ALTERNATIVE is used in the middle of an inline asm block, this would otherwise lead to the following instruction being appended directly to the trailing ".popsection", and a failed compile.
Fixes: 9cebed423c84 ("x86, alternative: Use .pushsection/.popsection") Signed-off-by: David Woodhouse dwmw@amazon.co.uk Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: gnomes@lxorguk.ukuu.org.uk Cc: Rik van Riel riel@redhat.com Cc: ak@linux.intel.com Cc: Tim Chen tim.c.chen@linux.intel.com Cc: Peter Zijlstra peterz@infradead.org Cc: Paul Turner pjt@google.com Cc: Jiri Kosina jikos@kernel.org Cc: Andy Lutomirski luto@amacapital.net Cc: Dave Hansen dave.hansen@intel.com Cc: Kees Cook keescook@google.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Greg Kroah-Hartman gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/20180104143710.8961-8-dwmw@amazon.co.uk Signed-off-by: Ben Hutchings ben@decadent.org.uk --- arch/x86/include/asm/alternative.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -124,7 +124,7 @@ static inline int alternatives_text_rese ".popsection\n" \ ".pushsection .altinstr_replacement, "ax"\n" \ ALTINSTR_REPLACEMENT(newinstr, feature, 1) \ - ".popsection" + ".popsection\n"
#define ALTERNATIVE_2(oldinstr, newinstr1, feature1, newinstr2, feature2)\ OLDINSTR_2(oldinstr, 1, 2) \ @@ -135,7 +135,7 @@ static inline int alternatives_text_rese ".pushsection .altinstr_replacement, "ax"\n" \ ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \ ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \ - ".popsection" + ".popsection\n"
/* * This must be included *after* the definition of ALTERNATIVE due to