Files
system76-coreboot/src/cpu
Arthur Heymans 7875dbd981 cpu/intel/p4-netburst: skip caching rom on model_fxx
An unidentified combination of speculative reads and branch
predictions inside WRPROT-cacheable memory can cause invalidation of
cachelines and loss of stack on models based on NetBurst
microarchitecture.

Therefore disable WRPROT region entirely for all family F models.

As an extreme example, just changing the location of a constant string
passed to printk() has been witnessed to make a the boot fail early on
in romstage.

Change-Id: I1df84ad55e2d8d6d4e8dca10125131b5f525f0d7
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27133
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-06-27 11:48:53 +00:00
..
2015-01-27 01:41:40 +01:00
2018-06-06 10:28:00 +00:00