search for: 81c577c7deba

...r the paravirt alternatives. Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/kernel/alternative.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 3344d3382e91..81c577c7deba 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -410,20 +410,28 @@ void __init_or_module noinline apply_alternatives(struct alt_instr *start, insnbuf_sz = a->replacementlen; /* - * 0xe8 is a relative jump; fix the offset. - * - * Instruction length...

...<jpoimboe at redhat.com> > > --- > > arch/x86/kernel/alternative.c | 22 +++++++++++++++------- > > 1 file changed, 15 insertions(+), 7 deletions(-) > > > > diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c > > index 3344d3382e91..81c577c7deba 100644 > > --- a/arch/x86/kernel/alternative.c > > +++ b/arch/x86/kernel/alternative.c > > @@ -410,20 +410,28 @@ void __init_or_module noinline apply_alternatives(struct alt_instr *start, > > insnbuf_sz = a->replacementlen; > > > > /* > > - * 0...

...<jpoimboe at redhat.com> > > --- > > arch/x86/kernel/alternative.c | 22 +++++++++++++++------- > > 1 file changed, 15 insertions(+), 7 deletions(-) > > > > diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c > > index 3344d3382e91..81c577c7deba 100644 > > --- a/arch/x86/kernel/alternative.c > > +++ b/arch/x86/kernel/alternative.c > > @@ -410,20 +410,28 @@ void __init_or_module noinline apply_alternatives(struct alt_instr *start, > > insnbuf_sz = a->replacementlen; > > > > /* > > - * 0...

...Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> > --- > arch/x86/kernel/alternative.c | 22 +++++++++++++++------- > 1 file changed, 15 insertions(+), 7 deletions(-) > > diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c > index 3344d3382e91..81c577c7deba 100644 > --- a/arch/x86/kernel/alternative.c > +++ b/arch/x86/kernel/alternative.c > @@ -410,20 +410,28 @@ void __init_or_module noinline apply_alternatives(struct alt_instr *start, > insnbuf_sz = a->replacementlen; > > /* > - * 0xe8 is a relative jump; fix the off...

...E(op, "", "", PVOP_CALL_ARG1(arg1)) +#define PVOP_ALT_VCALLEE1(native, op, arg1) \ + __PVOP_ALT_VCALLEESAVE(native, op, PVOP_CALL_ARG1(arg1)) #define PVOP_CALL2(rettype, op, arg1, arg2) \ diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 81c577c7deba..2d13c1af76ac 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -21,6 +21,7 @@ #include <asm/tlbflush.h> #include <asm/io.h> #include <asm/fixmap.h> +#include <asm/cpufeature.h> int __read_mostly alternatives_patched; @@ -269,6 +270,7...

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