Messages in this thread | | | Date | Sat, 7 Mar 2015 13:11:04 -0800 | Subject | Re: [PATCH v2 04/15] x86, kaslr: get kaslr_enabled back correctly | From | Yinghai Lu <> |
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On Sat, Mar 7, 2015 at 1:05 PM, Borislav Petkov <bp@suse.de> wrote: > On Fri, Mar 06, 2015 at 11:53:22AM -0800, Yinghai Lu wrote: > --- > Commit > > f47233c2d34f ("x86/mm/ASLR: Propagate base load address calculation") > > started passing KASLR status to kernel proper, but it uses a physical > address as the vaule, leading to parsing bogus KASLR status in kernel > proper. > > The setup_data linked list and thus the element which contains > kaslr_enabled is chained together using physical addresses. At the time > when we access it in the kernel proper, we're already running with > paging enabled and therefore must access it through its virtual address. > > This patch changes the code to use early_memmap() and access the value. > ---
Good to me.
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