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Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into boot mem areas

From Dave Young <dyoung@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into boot mem areas
Date 2017-01-12 22:30 +0100
Message-ID <sYV6y-xa-15@gated-at.bofh.it> (permalink)
References <sYKb7-2kU-3@gated-at.bofh.it> <sYKb7-2kU-15@gated-at.bofh.it> <sYQgx-66R-3@gated-at.bofh.it>
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On 01/12/17 at 04:15pm, Ard Biesheuvel wrote:
> Hello Dave,
> 
> On 12 January 2017 at 09:41, Dave Young <dyoung@redhat.com> wrote:
> > There are memory ranges like below when I testing early efi_mem_reserve:
> >
> > efi: mem62: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> > efi: mem63: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> > efi: mem64: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> > efi: mem65: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> > efi: mem66: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> > efi: mem67: [Reserved           |   |  |  |  |  |  |  |   |  |  |  |  ] range=[0x0000000000000000-0xffffffffffffffff] (0MB)
> >
> 
> Did you spot Peter's patch to prune invalid memmap entries?
> 
> https://git.kernel.org/cgit/linux/kernel/git/efi/efi.git/commit/?h=next&id=b2a91a35445229
> 
> I would expect this patch to no longer be necessary with that in place, no?

Ard, good suggestion, I did not notice that patch, will try. Actually
I'm not sure about fake_mem handling, if we can filter out the invalid
ranges then it will be natural to drop this one after a test.

Thanks
Dave

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[PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into boot mem areas Dave Young <dyoung@redhat.com> - 2017-01-12 10:50 +0100
  Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into boot mem areas Nicolai Stange <nicstange@gmail.com> - 2017-01-12 12:20 +0100
    Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into  boot mem areas Dave Young <dyoung@redhat.com> - 2017-01-12 22:40 +0100
  Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into  boot mem areas Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2017-01-12 17:20 +0100
    Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into  boot mem areas Dave Young <dyoung@redhat.com> - 2017-01-12 22:30 +0100
      Re: [PATCH 1/4] efi/x86: make efi_memmap_reserve only insert into  boot mem areas Dave Young <dyoung@redhat.com> - 2017-01-13 09:20 +0100

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