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From: Avi K. <av...@qu...> - 2007-06-20 07:57:26
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Luca Tettamanti wrote: > When the old value and new one are the same the emulator skips the > write; this is undesiderable when the destination is a MMIO area and the > write shall be performed regardless of the previous value. This > optimization breaks e.g. a Linux guest APIC compiled without > X86_GOOD_APIC. > > Remove the check and perform the writeback stage in the emulation unless > it's explicitly disabled (currently push and some 2 bytes instructions > may disable the writeback). > > Applied both, thanks. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. |