Messages in this thread Patch in this message | | | Subject | [PATCH] ppc64: Fix a typo in the code that reserves memory at boot | From | Benjamin Herrenschmidt <> | Date | Sat, 16 Oct 2004 14:55:45 +1000 |
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Hi !
The code that marks memory regions as "reserved" early during boot has a typo (doing incorrect rounding of the top address) which can cause some areas to not be properly reserved. That may explain some cases of initrd corruption reported recently.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
===== arch/ppc64/kernel/prom_init.c 1.2 vs edited ===== --- 1.2/arch/ppc64/kernel/prom_init.c 2004-09-27 19:12:49 +10:00 +++ edited/arch/ppc64/kernel/prom_init.c 2004-10-16 14:53:28 +10:00 @@ -595,7 +595,7 @@ * dumb and just copy this entire array to the boot params */ base = _ALIGN_DOWN(base, PAGE_SIZE); - top = _ALIGN_DOWN(top, PAGE_SIZE); + top = _ALIGN_UP(top, PAGE_SIZE); size = top - base; if (cnt >= (MEM_RESERVE_MAP_SIZE - 1))
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