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Groups > linux.kernel > #1342343
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings |
| Date | 2016-02-24 20:00 +0100 |
| Message-ID | <r5MPg-cO-19@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <r5vY6-54n-7@gated-at.bofh.it> <r5xGx-6lj-5@gated-at.bofh.it> <r5Ish-5Lf-3@gated-at.bofh.it> <r5Ku7-76F-15@gated-at.bofh.it> <r5KDN-7ce-31@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Feb 24, 2016 at 8:36 AM, Andy Lutomirski <luto@amacapital.net> wrote:
>>
>> So the EFI runtime crap should not change once it is mapped. And those
>> should be global. It is only natural.
>
> Why is it natural?
>
> Long-term, I'd rather see EFI runtime services use an actual mm_struct
> and use_mm.
Definitely.
The EFI runtime page mapping may be unchanging, but that doesn't mean
we should be mapping it all the time - the mapping may not change, but
we will change away from it.
So marking those pages global is very wrong.
Linus
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[tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com - 2016-02-23 10:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-23 18:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Linus Torvalds <torvalds@linux-foundation.org> - 2016-02-23 19:10 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-23 19:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings "H. Peter Anvin" <hpa@zytor.com> - 2016-02-24 03:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings "H. Peter Anvin" <hpa@zytor.com> - 2016-02-24 03:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Ingo Molnar <mingo@kernel.org> - 2016-02-25 10:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> - 2016-02-24 02:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 03:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 15:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-24 17:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:40 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Linus Torvalds <torvalds@linux-foundation.org> - 2016-02-24 20:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 20:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 21:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Sylvain Chouleur <sylvain.chouleur@gmail.com> - 2016-02-29 12:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-03-02 12:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 20:40 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 21:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Ingo Molnar <mingo@kernel.org> - 2016-02-25 10:10 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-25 16:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-25 17:10 +0100
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