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| author | Juergen Gross <jgross@suse.com> | 2022-11-09 16:44:18 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-11-24 15:56:44 +0300 |
| commit | f1a033cc6b9eb6d80322008422df3c87aa5d47a0 (patch) | |
| tree | 1aba4827c74f4032696e26aa5232761b76d0ae35 /arch/x86/include/asm/paravirt.h | |
| parent | 5736b1b70170e15d66ec02e500db917ef42ade83 (diff) | |
| download | linux-f1a033cc6b9eb6d80322008422df3c87aa5d47a0.tar.xz | |
x86/paravirt: Use common macro for creating simple asm paravirt functions
There are some paravirt assembler functions which are sharing a common
pattern. Introduce a macro DEFINE_PARAVIRT_ASM() for creating them.
Note that this macro is including explicit alignment of the generated
functions, leading to __raw_callee_save___kvm_vcpu_is_preempted(),
_paravirt_nop() and paravirt_ret0() to be aligned at 4 byte boundaries
now.
The explicit _paravirt_nop() prototype in paravirt.c isn't needed, as
it is included in paravirt_types.h already.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
Link: https://lkml.kernel.org/r/20221109134418.6516-1-jgross@suse.com
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 2851bc2339d5..73e9522db7c1 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -731,6 +731,18 @@ static __always_inline unsigned long arch_local_irq_save(void) #undef PVOP_VCALL4 #undef PVOP_CALL4 +#define DEFINE_PARAVIRT_ASM(func, instr, sec) \ + asm (".pushsection " #sec ", \"ax\"\n" \ + ".global " #func "\n\t" \ + ".type " #func ", @function\n\t" \ + ASM_FUNC_ALIGN "\n" \ + #func ":\n\t" \ + ASM_ENDBR \ + instr "\n\t" \ + ASM_RET \ + ".size " #func ", . - " #func "\n\t" \ + ".popsection") + extern void default_banner(void); #else /* __ASSEMBLY__ */ |