Re: [RFC 2/7] change headers preparing for steal time

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On 08/25/2010 11:43 AM, Glauber Costa wrote:
This guest/host common patch prepares infrastructure for
the steal time implementation. Some constants are added,
and a name change happens in pvclock vcpu structure.

Signed-off-by: Glauber Costa<glommer@xxxxxxxxxx>
---
  arch/x86/include/asm/kvm_para.h    |    1 +
  arch/x86/include/asm/pvclock-abi.h |    4 +++-
  2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 05eba5e..1759c81 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -25,6 +25,7 @@
   * in pvclock structure. If no bits are set, all flags are ignored.
   */
  #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT	24
+#define KVM_FEATURE_CLOCKSOURCE_STEAL_BIT 	25

  #define MSR_KVM_WALL_CLOCK  0x11
  #define MSR_KVM_SYSTEM_TIME 0x12
diff --git a/arch/x86/include/asm/pvclock-abi.h b/arch/x86/include/asm/pvclock-abi.h
index 35f2d19..417061b 100644
--- a/arch/x86/include/asm/pvclock-abi.h
+++ b/arch/x86/include/asm/pvclock-abi.h
@@ -24,7 +24,7 @@

  struct pvclock_vcpu_time_info {
  	u32   version;
-	u32   pad0;
+	u32   steal_time;
  	u64   tsc_timestamp;
  	u64   system_time;
  	u32   tsc_to_system_mul;
@@ -40,5 +40,7 @@ struct pvclock_wall_clock {
  } __attribute__((__packed__));

  #define PVCLOCK_TSC_STABLE_BIT	(1<<  0)
+#define PVCLOCK_STEAL_BIT   (2<<  0)
+
  #endif /* __ASSEMBLY__ */
  #endif /* _ASM_X86_PVCLOCK_ABI_H */


Will 32 bits be enough?
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