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Groups > linux.kernel > #1641735
| From | "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support |
| Date | 2017-05-15 16:20 +0200 |
| Message-ID | <tHp0R-O3-3@gated-at.bofh.it> (permalink) |
| References | <tHn8J-87x-7@gated-at.bofh.it> <tHn8K-87x-25@gated-at.bofh.it> <tHns5-8dX-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, May 15, 2017 at 02:31:00PM +0200, Juergen Gross wrote: > > 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". Makes sense. ----------------------8<---------------------------- From 422a980c748a5b84a013258eb7c00d61edc34492 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Date: Sat, 5 Nov 2016 03:24:03 +0300 Subject: [PATCHv6 8/9] x86: Enable 5-level paging support Most of things are in place and we can enable support of 5-level paging. The patch makes XEN_PV dependent on !X86_5LEVEL. XEN_PV is not ready to work with 5-level paging. 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..1be9667bd476 100644 --- a/arch/x86/xen/Kconfig +++ b/arch/x86/xen/Kconfig @@ -17,6 +17,7 @@ config XEN_PV bool "Xen PV guest support" default y depends on XEN + depends on !X86_5LEVEL select XEN_HAVE_PVMMU select XEN_HAVE_VPMU help -- Kirill A. Shutemov
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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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