OpenCloudOS-Kernel/arch/x86
Marcelo Tosatti b48aa97e38 KVM: x86: require matched TSC offsets for master clock
With master clock, a pvclock clock read calculates:

ret = system_timestamp + [ (rdtsc + tsc_offset) - tsc_timestamp ]

Where 'rdtsc' is the host TSC.

system_timestamp and tsc_timestamp are unique, one tuple
per VM: the "master clock".

Given a host with synchronized TSCs, its obvious that
guest TSC must be matched for the above to guarantee monotonicity.

Allow master clock usage only if guest TSCs are synchronized.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-11-27 23:29:15 -02:00
..
boot x86, boot: Explicitly include autoconf.h for hostprogs 2012-10-14 12:41:28 -07:00
configs x86/Kconfig: Turn off DEBUG_NX_TEST module in defconfigs 2012-09-05 10:43:12 +02:00
crypto crypto: aesni - fix XTS mode on x86-32, add wrapper function for asmlinkage aesni_enc() 2012-10-18 14:01:33 -07:00
ia32 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-10 12:02:25 +09:00
include KVM: x86: require matched TSC offsets for master clock 2012-11-27 23:29:15 -02:00
kernel x86: kvm guest: pvclock vsyscall support 2012-11-27 23:29:10 -02:00
kvm KVM: x86: require matched TSC offsets for master clock 2012-11-27 23:29:15 -02:00
lguest virtio: remove CONFIG_VIRTIO_RING 2012-09-28 15:05:15 +09:30
lib UAPI: x86: Fix insn_sanity build failure after UAPI split 2012-10-02 18:01:56 +01:00
math-emu x86: Rename trap_no to trap_nr in thread_struct 2012-03-13 06:24:09 +01:00
mm x86, mm: Undo incorrect revert in arch/x86/mm/init.c 2012-10-25 15:45:45 -07:00
net x86: bpf_jit_comp: add XOR instruction for BPF JIT 2012-09-24 16:54:35 -04:00
oprofile oprofile, x86: Fix wrapping bug in op_x86_get_ctrl() 2012-10-15 14:38:24 +02:00
pci PCI changes for the 3.7 merge window: 2012-10-01 12:05:36 -07:00
platform EFI updates for 3.7 2012-10-26 10:17:38 +02:00
power x86, kvm: Call restore_sched_clock_state() only after %gs is initialized 2012-04-02 13:53:00 +02:00
realmode x86, suspend: Correct the restore of CR4, EFER; skip computing EFLAGS.ID 2012-10-02 08:42:31 +02:00
syscalls Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-10 12:02:25 +09:00
tools UAPI: x86: Fix the test_get_len tool 2012-10-02 18:01:56 +01:00
um Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
vdso x86: vdso: pvclock gettime support 2012-11-27 23:29:11 -02:00
video x86: Use vga_default_device() when determining whether an fb is primary 2012-04-24 09:50:17 +01:00
xen Merge commit 'v3.7-rc1' into stable/for-linus-3.7 2012-10-19 15:19:19 -04:00
.gitignore x86/kprobes: Add arch/x86/tools/insn_sanity to .gitignore 2012-01-16 08:21:59 +01:00
Kbuild x86, realmode: realmode.bin infrastructure 2012-05-08 11:41:48 -07:00
Kconfig Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
Kconfig.cpu x86/Kconfig: Clean up Kconfig defaults 2012-09-13 17:45:33 +02:00
Kconfig.debug x86/tlb: add tlb_flushall_shift knob into debugfs 2012-06-27 19:29:10 -07:00
Makefile kbuild: Fix accidental revert in commit fe04ddf 2012-10-15 13:01:05 -07:00
Makefile.um um: fix linker script generation 2012-04-09 13:59:00 -04:00
Makefile_32.cpu