diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2012-04-08 21:48:52 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-04-08 21:48:52 +0200 |
| commit | e75d660672ddd11704b7f0fdb8ff21968587b266 (patch) | |
| tree | ccb9c107744c10b553c0373e450bee3971d16c00 /arch/powerpc/include/asm/epapr_hcalls.h | |
| parent | 61282f37927143e45b03153f3e7b48d6b702147a (diff) | |
| parent | 0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff) | |
Merge branch 'master' into for-next
Merge with latest Linus' tree, as I have incoming patches
that fix code that is newer than current HEAD of for-next.
Conflicts:
drivers/net/ethernet/realtek/r8169.c
Diffstat (limited to 'arch/powerpc/include/asm/epapr_hcalls.h')
| -rw-r--r-- | arch/powerpc/include/asm/epapr_hcalls.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h index f3b0c2cc9fea..976835d8f22e 100644 --- a/arch/powerpc/include/asm/epapr_hcalls.h +++ b/arch/powerpc/include/asm/epapr_hcalls.h @@ -134,10 +134,15 @@ * whether they will be clobbered. * * Note that r11 can be used as an output parameter. + * + * The "memory" clobber is only necessary for hcalls where the Hypervisor + * will read or write guest memory. However, we add it to all hcalls because + * the impact is minimal, and we want to ensure that it's present for the + * hcalls that need it. */ /* List of common clobbered registers. Do not use this macro. */ -#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc" +#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc", "memory" #define EV_HCALL_CLOBBERS8 EV_HCALL_CLOBBERS #define EV_HCALL_CLOBBERS7 EV_HCALL_CLOBBERS8, "r10" |