Messages in this thread | | | Subject | Re: [PATCH] powerpc 8xx: Loading kernels over 8Mbytes without CONFIG_PIN_TLB | From | Scott Wood <> | Date | Fri, 6 Dec 2013 13:09:56 -0600 |
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On Wed, 2013-11-27 at 12:04 +0100, Christophe Leroy wrote: > Today, the only way to load kernels whose size is greater than 8Mbytes is to > activate CONFIG_PIN_TLB. Otherwise, the physical memory initially mapped is > limited to 8Mbytes. This patch sets up 24 Mbytes of initial memory regardless > of whether CONFIG_PIN_TLB is active or not. It allows to load "big" kernels > (for instance when activating CONFIG_LOCKDEP_SUPPORT) without having > to activate CONFIG_PIN_TLB.
So, what happens on boards with less than 24M memory present? Even if you avoid explicitly referencing those addresses, what if there is a speculative access -- or does 8xx not do that?
-Scott
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