Messages in this thread | | | From | Catalin Marinas <> | Subject | Re: [PATCH] arm64: mm: account for hotplug memory when randomizing the linear region | Date | Tue, 10 Nov 2020 19:14:18 +0000 |
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On Wed, 14 Oct 2020 10:18:57 +0200, Ard Biesheuvel wrote: > As a hardening measure, we currently randomize the placement of > physical memory inside the linear region when KASLR is in effect. > Since the random offset at which to place the available physical > memory inside the linear region is chosen early at boot, it is > based on the memblock description of memory, which does not cover > hotplug memory. The consequence of this is that the randomization > offset may be chosen such that any hotplugged memory located above > memblock_end_of_DRAM() that appears later is pushed off the end of > the linear region, where it cannot be accessed. > > [...]
Applied to arm64 (for-next/mem-hotplug), thanks!
[1/1] arm64: mm: account for hotplug memory when randomizing the linear region https://git.kernel.org/arm64/c/97d6786e0669
-- Catalin
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