Messages in this thread | | | Date | Sat, 18 Oct 2014 16:49:28 +0200 | From | Dominik Dingel <> | Subject | Re: [PATCH 2/4] mm: introduce new VM_NOZEROPAGE flag |
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On Fri, 17 Oct 2014 15:04:21 -0700 Dave Hansen <dave.hansen@intel.com> wrote:
> Is there ever a time where the VMAs under an mm have mixed VM_NOZEROPAGE > status? Reading the patches, it _looks_ like it might be an all or > nothing thing.
Currently it is an all or nothing thing, but for a future change we might want to just tag the guest memory instead of the complete user address space.
> Full disclosure: I've got an x86-specific feature I want to steal a flag > for. Maybe we should just define another VM_ARCH bit. >
So you think of something like:
#if defined(CONFIG_S390) # define VM_NOZEROPAGE VM_ARCH_1 #endif
#ifndef VM_NOZEROPAGE # define VM_NOZEROPAGE VM_NONE #endif
right?
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