Commit 35cbdaf7 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'x86_paravirt_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull x86 paravirt improvement from Borislav Petkov:

 - Shorten CALL insns to pvops by a byte by using rip-relative
   addressing

* tag 'x86_paravirt_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/paravirt: Use %rip-relative addressing in hook calls
parents e10821b8 2e1f8e55

arch/x86/include/asm/paravirt_types.h

+2 −2
Original line number Diff line number Diff line
@@ -279,7 +279,7 @@ extern void (*paravirt_iret)(void); 


#define paravirt_type(op)				\

	[paravirt_typenum] "i" (PARAVIRT_PATCH(op)),	\

	[paravirt_opptr] "i" (&(pv_ops.op))

	[paravirt_opptr] "m" (pv_ops.op)

#define paravirt_clobber(clobber)		\

	[paravirt_clobber] "i" (clobber)
@@ -316,7 +316,7 @@ int paravirt_disable_iospace(void); 
 */

#define PARAVIRT_CALL					\

	ANNOTATE_RETPOLINE_SAFE				\

	"call *%c[paravirt_opptr];"

	"call *%[paravirt_opptr];"



/*

 * These macros are intended to wrap calls through one of the paravirt