diff options
| author | Glauber Costa <glommer@redhat.com> | 2010-05-11 12:17:39 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-19 04:40:59 -0400 |
| commit | 424c32f1aa3112632a657d45698c8e7666668f78 (patch) | |
| tree | c63fd6d83b6f2cbcb979b3f55c9a07425b13053f /arch/x86/include/asm/pvclock-abi.h | |
| parent | b69e8caef5b190af48c525f6d715e7b7728a77f6 (diff) | |
x86, paravirt: Enable pvclock flags in vcpu_time_info structure
This patch removes one padding byte and transform it into a flags
field. New versions of guests using pvclock will query these flags
upon each read.
Flags, however, will only be interpreted when the guest decides to.
It uses the pvclock_valid_flags function to signal that a specific
set of flags should be taken into consideration. Which flags are valid
are usually devised via HV negotiation.
Signed-off-by: Glauber Costa <glommer@redhat.com>
CC: Jeremy Fitzhardinge <jeremy@goop.org>
Acked-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/pvclock-abi.h')
| -rw-r--r-- | arch/x86/include/asm/pvclock-abi.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/pvclock-abi.h b/arch/x86/include/asm/pvclock-abi.h index 6d93508f2626..ec5c41ac4bef 100644 --- a/arch/x86/include/asm/pvclock-abi.h +++ b/arch/x86/include/asm/pvclock-abi.h | |||
| @@ -29,7 +29,8 @@ struct pvclock_vcpu_time_info { | |||
| 29 | u64 system_time; | 29 | u64 system_time; |
| 30 | u32 tsc_to_system_mul; | 30 | u32 tsc_to_system_mul; |
| 31 | s8 tsc_shift; | 31 | s8 tsc_shift; |
| 32 | u8 pad[3]; | 32 | u8 flags; |
| 33 | u8 pad[2]; | ||
| 33 | } __attribute__((__packed__)); /* 32 bytes */ | 34 | } __attribute__((__packed__)); /* 32 bytes */ |
| 34 | 35 | ||
| 35 | struct pvclock_wall_clock { | 36 | struct pvclock_wall_clock { |