Messages in this thread | | | Date | Wed, 14 Feb 2007 16:42:09 +0530 | From | Vivek Goyal <> | Subject | Re: Will smp alternative try to patch init text also? |
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On Wed, Feb 14, 2007 at 11:51:31AM +0100, Gerd Hoffmann wrote: > Vivek Goyal wrote: > > So what happens if somebody builds a SMP kernel and runs on a UP machine. > > Later it hotplus one CPU. Then kernel will switch to SMP mode. Looking > > at the code it looks like it will also try to patch init text which is > > no more there and will corrupt something else? > > There are range checks for both kernel (_text -> _etext) and modules > (.text section). Anything outside isn't patched. >
Oh... I missed that. Thanks.
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