search for: alternative_2

The ALTERNATIVE() and ALTERNATIVE_2() macros are GNU assembler macros, which makes them quite inflexible for future changes. Convert them to preprocessor macros. Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/entry/entry_32.S | 12 +++--- arch/x86/entry/entry_64.S | 10 ++---...

...e some objtool work needed > (at least removing the specific paravirt handling). > > Juergen Gross (3): > x86/paravirt: move some functions and defines to alternative > x86/alternative: add indirect call patching > x86/paravirt: switch mixed paravirt/alternative calls to alternative_2 > > arch/x86/include/asm/alternative.h | 26 +++++- > arch/x86/include/asm/paravirt.h | 39 ++------- > arch/x86/include/asm/paravirt_types.h | 68 +++------------- > arch/x86/include/asm/qspinlock_paravirt.h | 4 +- > arch/x86/include/asm/text-patchin...

...e I'm quite sure there will be some objtool work needed (at least removing the specific paravirt handling). Juergen Gross (3): x86/paravirt: move some functions and defines to alternative x86/alternative: add indirect call patching x86/paravirt: switch mixed paravirt/alternative calls to alternative_2 arch/x86/include/asm/alternative.h | 26 +++++- arch/x86/include/asm/paravirt.h | 39 ++------- arch/x86/include/asm/paravirt_types.h | 68 +++------------- arch/x86/include/asm/qspinlock_paravirt.h | 4 +- arch/x86/include/asm/text-patching.h | 12 --- arch/x86/kernel/...

...e I'm quite sure there will be some objtool work needed (at least removing the specific paravirt handling). Juergen Gross (3): x86/paravirt: move some functions and defines to alternative x86/alternative: add indirect call patching x86/paravirt: switch mixed paravirt/alternative calls to alternative_2 arch/x86/include/asm/alternative.h | 26 +++++- arch/x86/include/asm/paravirt.h | 39 ++------- arch/x86/include/asm/paravirt_types.h | 68 +++------------- arch/x86/include/asm/qspinlock_paravirt.h | 4 +- arch/x86/include/asm/text-patching.h | 12 --- arch/x86/kernel/...

On Wed, Oct 10, 2018 at 01:54:33PM -0500, Segher Boessenkool wrote: > It would be great to hear from kernel people if it works adequately for > what you guys want it for :-) Sure, ping me when you have the final version and I'll try to build gcc with it and do some size comparisons. Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the

On Wed, Oct 10, 2018 at 01:54:33PM -0500, Segher Boessenkool wrote: > It would be great to hear from kernel people if it works adequately for > what you guys want it for :-) Sure, ping me when you have the final version and I'll try to build gcc with it and do some size comparisons. Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

On 04/10/17 17:58, Josh Poimboeuf wrote: > The ALTERNATIVE() and ALTERNATIVE_2() macros are GNU assembler macros, > which makes them quite inflexible for future changes. Convert them to > preprocessor macros. > > Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> Reviewed-by: Juergen Gross <jgross at suse.com> Juergen

...on .altinstr_replacement, \"ax\"\n" \ ALTINSTR_REPLACEMENT(newinstr, feature, 1) \ - ".popsection" + ".popsection\n" + +#define ALTERNATIVE(oldinstr, newinstr, feature) \ + __ALTERNATIVE(".altinstructions", oldinstr, newinstr, feature) #define ALTERNATIVE_2(oldinstr, newinstr1, feature1, newinstr2, feature2)\ OLDINSTR_2(oldinstr, 1, 2) \ @@ -150,7 +154,7 @@ static inline int alternatives_text_reserved(void *start, void *end) ".pushsection .altinstr_replacement, \"ax\"\n" \ ALTINSTR_REPLACEMENT(newinstr1, feature1, 1)...