Revision 886123fb3a8656699dff40afa0573df359abeb18 authored by Chen Yu on 06 May 2016, 03:33:39 UTC, committed by Thomas Gleixner on 06 May 2016, 09:50:50 UTC
Currently we read the tsc radio: ratio = (MSR_PLATFORM_INFO >> 8) & 0x1f; Thus we get bit 8-12 of MSR_PLATFORM_INFO, however according to the SDM (35.5), the ratio bits are bit 8-15. Ignoring the upper bits can result in an incorrect tsc ratio, which causes the TSC calibration and the Local APIC timer frequency to be incorrect. Fix this problem by masking 0xff instead. [ tglx: Massaged changelog ] Fixes: 7da7c1561366 "x86, tsc: Add static (MSR) TSC calibration on Intel Atom SoCs" Signed-off-by: Chen Yu <yu.c.chen@intel.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: stable@vger.kernel.org Cc: Bin Gao <bin.gao@intel.com> Cc: Len Brown <lenb@kernel.org> Link: http://lkml.kernel.org/r/1462505619-5516-1-git-send-email-yu.c.chen@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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| File | Mode | Size |
|---|---|---|
| .gitignore | -rw-r--r-- | 44 bytes |
| Kconfig | -rw-r--r-- | 2.3 KB |
| Makefile | -rw-r--r-- | 3.7 KB |
| system_certificates.S | -rw-r--r-- | 917 bytes |
| system_keyring.c | -rw-r--r-- | 4.0 KB |
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