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Groups > linux.kernel > #1641619
| From | Juergen Gross <jgross@suse.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support |
| Date | 2017-05-15 14:40 +0200 |
| Message-ID | <tHns5-8dX-1@gated-at.bofh.it> (permalink) |
| References | <tHn8J-87x-7@gated-at.bofh.it> <tHn8K-87x-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 15/05/17 14:12, Kirill A. Shutemov wrote: > Most of things are in place and we can enable support of 5-level paging. > > Enabling XEN with 5-level paging requires more work. The patch makes XEN > dependent on !X86_5LEVEL. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> > --- > arch/x86/Kconfig | 5 +++++ > arch/x86/xen/Kconfig | 1 + > 2 files changed, 6 insertions(+) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index cd18994a9555..11bd0498f64c 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -318,6 +318,7 @@ config FIX_EARLYCON_MEM > > config PGTABLE_LEVELS > int > + default 5 if X86_5LEVEL > default 4 if X86_64 > default 3 if X86_PAE > default 2 > @@ -1390,6 +1391,10 @@ config X86_PAE > has the cost of more pagetable lookup overhead, and also > consumes more pagetable space per process. > > +config X86_5LEVEL > + bool "Enable 5-level page tables support" > + depends on X86_64 > + > config ARCH_PHYS_ADDR_T_64BIT > def_bool y > depends on X86_64 || X86_PAE > diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig > index 027987638e98..12205e6dfa59 100644 > --- a/arch/x86/xen/Kconfig > +++ b/arch/x86/xen/Kconfig > @@ -5,6 +5,7 @@ > config XEN > bool "Xen guest support" > depends on PARAVIRT > + depends on !X86_5LEVEL I'd rather put this under "config XEN_PV". Juergen
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[PATCHv5, REBASED 8/9] x86: Enable 5-level paging support "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2017-05-15 14:20 +0200
Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support Juergen Gross <jgross@suse.com> - 2017-05-15 14:40 +0200
Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support Juergen Gross <jgross@suse.com> - 2017-05-15 16:20 +0200
Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2017-05-15 16:20 +0200
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