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Default branch: MAIN
Current tag: yamt-pagecache-base5
Revision 1.99 / (download) - annotate - [select for diffs], Thu Apr 19 18:07:05 2012 UTC (5 years, 4 months ago) by jym
CVS Tags: yamt-pagecache-base5, jmcneill-usbmp-base9, jmcneill-usbmp-base10
Changes since 1.98: +3 -3 lines
Diff to previous 1.98 (colored)
Mirror what is done for amd64 boot and ACPI wakeup code by setting CR0_WP (write protection bit) early on boot. Although it is set later via cpu_init(), this can help tracking down invalid writes to pages mapped as read only from ring 0. No regression observed when booting under anita (QEMU) or a P4 host. Depending on your hardware or setup, you may trigger code paths I have overlooked. So if your machine does not start properly, or you get page faults early during boot, please report them to me.
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