On 04/09/15 13:28, Ard Biesheuvel wrote: > This updates ArmVirtualizationMemoryInitPeiLib so that the PEI memory > region, i.e., the region that is used both before and after the MMU > and caches are enabled, is invalidated by virtual address before > enabling the MMU. > > This prevents issues where data we modified with the caches and MMU > off may be shadowed by clean cachelines in system caches or in lower > level caches on other CPUs, resulting in the this data to become > invisible once we turn the MMU and caches on. > > Also reduce the size of the region to 16 MB (from 64 MB), to reduce > the potential performance hit from invalidating the entire region by > virtual address. > > Contributed-under: TianoCore Contribution Agreement 1.0 > Reviewed-By: Olivier Martin <olivier.mar...@arm.com> > Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > --- > > ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.c > | 10 ++++++++++ > > ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.inf > | 1 + > 2 files changed, 11 insertions(+)
Reviewed-by: Laszlo Ersek <ler...@redhat.com> ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
