Displaying 4 results from an estimated 4 matches for "142b".
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2017 Oct 04
0
[PATCH 09/13] x86/asm: Convert ALTERNATIVE*() assembler macros to preprocessor macros
...g
* in case @newinstr is longer than @oldinstr.
*/
-.macro ALTERNATIVE oldinstr, newinstr, feature
-140:
- \oldinstr
-141:
- .skip -(((144f-143f)-(141b-140b)) > 0) * ((144f-143f)-(141b-140b)),0x90
-142:
-
- .pushsection .altinstructions,"a"
- altinstruction_entry 140b,143f,\feature,142b-140b,144f-143f,142b-141b
- .popsection
-
- .pushsection .altinstr_replacement,"ax"
-143:
- \newinstr
-144:
+#define ALTERNATIVE(oldinstr, newinstr, feature) \
+140:; \
+ oldinstr; \
+141:; \
+ .skip -(((144f-143f)-(141b-140b)) > 0) * \
+ ((144f-143f)-(141b-14...
2017 Oct 04
1
[PATCH 11/13] x86/paravirt: Add paravirt alternatives infrastructure
...140:; \
oldinstr; \
141:; \
.skip -(((144f-143f)-(141b-140b)) > 0) * \
((144f-143f)-(141b-140b)),0x90; \
142:; \
- .pushsection .altinstructions, "a"; \
+ .pushsection section, "a"; \
altinstruction_entry 140b,143f,feature,142b-140b,144f-143f,142b-141b;\
.popsection; \
.pushsection .altinstr_replacement, "ax"; \
@@ -55,6 +55,11 @@
144:; \
.popsection
+#define ARGS(args...) args
+
+#define ALTERNATIVE(oldinstr, newinstr, feature) \
+ __ALTERNATIVE(.altinstructions, ARGS(oldinstr), ARGS(...
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
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
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
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