Messages in this thread | | | Date | Sun, 29 Jan 2006 21:28:33 +0100 | From | Eric Dumazet <> | Subject | Re: [PATCH] i386: instead of poisoning .init zone, change protection bits to force a fault |
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Benjamin LaHaise a écrit : > On Sun, Jan 29, 2006 at 09:04:44PM +0100, Eric Dumazet wrote: >> Chasing some invalid accesses to .init zone, I found that free_init_pages() >> was properly freeing the pages but virtual was still usable. > > This change will break the large table entries up, resulting in more TLB > pressure and reducing performance, and so should only be activated as a > debug option.
Hum... yet another CONFIG option ?
Could we 'just' move rodata (because of CONFIG_DEBUG_RODATA) and .init section in their own 2MB/4MB page, playing with vmlinux.lds.S ?
It would be possible to have a full hugepage readonly for rodata, and a full NOPROT for .init ?
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