https://bugzilla.kernel.org/show_bug.cgi?id=27452
--- Comment #9 from ykzhao <[email protected]> 2011-02-01 01:01:55 --- >From the acpidump it seems that SMI operation will be executed when trying to change the brightness level. And the following memory opregion in AML code is used in couse of triggering SMI. >OperationRegion (SMI0, SystemMemory, 0xBF6DEB38, 0x00000415) Field (SMI0, AnyAcc, NoLock, Preserve) { BCMD, 8, DID, 32, INFO, 4096 } Before the commit 6d5bbf00d, the corresponding memory is mapped as uncacheable. After it is mapped as cacheable, it is not clear whether the system still can keep the cache coherent after triggering the SMI operation. Maybe it is safer to still map them as uncacheable. Thanks. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
