kernel.git/arch/x86/include/asm/pvclock.h, branch linux-3.10.y

x86: pvclock: generic pvclock vsyscall initialization

2012-11-28T01:29:09Z

Originally from Jeremy Fitzhardinge. Introduce generic, non hypervisor specific, pvclock initialization routines. Signed-off-by: Marcelo Tosatti

x86: pvclock: add note about rdtsc barriers

2012-11-28T01:29:08Z

As noted by Gleb, not advertising SSE2 support implies no RDTSC barriers. Signed-off-by: Marcelo Tosatti

x86: pvclock: introduce helper to read flags

2012-11-28T01:29:08Z

Acked-by: Glauber Costa Signed-off-by: Marcelo Tosatti

x86: pvclock: create helper for pvclock data retrieval

2012-11-28T01:29:07Z

Originally from Jeremy Fitzhardinge. So code can be reused. Acked-by: Glauber Costa Signed-off-by: Marcelo Tosatti

KVM: Fix instruction size issue in pvclock scaling

2011-08-30T11:42:30Z

Commit de2d1a524e94 ("KVM: Fix register corruption in pvclock_scale_delta") introduced a mul instruction that may have only a memory operand; the assembler therefore cannot select the correct size: pvclock.s:229: Error: no instruction mnemonic suffix given and no register operands; can't size instruction In this example the assembler is: #APP mul -48(%rbp) ; shrd $32, %rdx, %rax #NO_APP A simple solution is to use mulq. Signed-off-by: Duncan Sands Signed-off-by: Avi Kivity

KVM: Fix register corruption in pvclock_scale_delta

2011-06-19T16:23:14Z

The 128-bit multiply in pvclock.h was missing an output constraint for EDX which caused a register corruption to appear. Thanks to Ulrich for diagnosing the EDX corruption and Avi for providing this fix. Signed-off-by: Zachary Amsden Signed-off-by: Avi Kivity

x86/pvclock: Zero last_value on resume

2010-11-28T08:33:20Z

If the guest domain has been suspend/resumed or migrated, then the system clock backing the pvclock clocksource may revert to a smaller value (ie, can be non-monotonic across the migration/save-restore). Make sure we zero last_value in that case so that the domain continues to see clock updates. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Ingo Molnar

x86: pvclock: Move scale_delta into common header

2010-10-24T08:51:24Z

The scale_delta function for shift / multiply with 31-bit precision moves to a common header so it can be used by both kernel and kvm module. Signed-off-by: Zachary Amsden Signed-off-by: Marcelo Tosatti

x86, paravirt: Enable pvclock flags in vcpu_time_info structure

2010-05-19T08:40:59Z

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 CC: Jeremy Fitzhardinge Acked-by: Zachary Amsden Signed-off-by: Marcelo Tosatti

x86: Fix ASM_X86__ header guards

2008-10-23T05:55:23Z

Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin