[PATCHv3 32/33] x86: enable 5-level paging support
From: Kirill A. Shutemov <hidden>
Date: 2017-02-17 14:14:13
Also in:
linux-arch, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit), xen hypervisor x86 · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, Juergen Gross
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 <redacted> --- 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 3d51256a9e61..f97b149145f8 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig@@ -315,6 +315,7 @@ config DEBUG_RODATA config PGTABLE_LEVELS int + default 5 if X86_5LEVEL default 4 if X86_64 default 3 if X86_PAE default 2
@@ -1379,6 +1380,10 @@ 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 c7b15f3e2cf3..e69eee1a5bad 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 select PARAVIRT_CLOCK select XEN_HAVE_PVMMU select XEN_HAVE_VPMU
--
2.11.0
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