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authorK. Y. Srinivasan <[email protected]>2013-09-30 17:28:52 +0200
committerH. Peter Anvin <[email protected]>2013-10-10 11:44:12 -0700
commit9e7827b5ea4ca93b4d864bc07c0fafb838d496b1 (patch)
tree6ceba20f6e2961e29dfdf42b02e1881cd629b94b /tools/perf/scripts/python
parentd0e639c9e06d44e713170031fe05fb60ebe680af (diff)
x86, hyperv: Get the local APIC timer frequency from the hypervisor
Hyper-V supports a mechanism for retrieving the local APIC frequency. Use this and bypass the calibration code in the kernel . This would allow us to boot the Linux kernel as a "modern VM" on Hyper-V where many of the legacy devices (such as PIT) are not emulated. I would like to thank Olaf Hering <[email protected]>, Jan Beulich <[email protected]> and H. Peter Anvin <[email protected]> for their help in this effort. In this version of the patch, I have addressed Jan's comments. Signed-off-by: K. Y. Srinivasan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Tested-by: Olaf Hering <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
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