linux_dsm_epyc7002/arch/x86
Baoquan He c100a58360 kdump, vmcoreinfo: Export pgtable_l5_enabled value
User-space utilities examining crash-kernels need to know if the
crashed kernel was in 5-level paging mode or not.

So write 'pgtable_l5_enabled' to vmcoreinfo, which covers these
three cases:

  pgtable_l5_enabled == 0 when:
   - Compiled with !CONFIG_X86_5LEVEL
   - Compiled with CONFIG_X86_5LEVEL=y while CPU has no 'la57' flag

  pgtable_l5_enabled != 0 when:
   - Compiled with CONFIG_X86_5LEVEL=y and CPU has 'la57' flag

Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: douly.fnst@cn.fujitsu.com
Cc: dyoung@redhat.com
Cc: ebiederm@xmission.com
Cc: kirill.shutemov@linux.intel.com
Cc: vgoyal@redhat.com
Link: http://lkml.kernel.org/r/20180302051801.19594-1-bhe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-03-12 09:43:56 +01:00
..
boot x86/boot/compressed/64: Prepare new top-level page table for trampoline 2018-03-12 09:37:26 +01:00
configs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-02-12 08:57:21 -08:00
entry Linux 4.16-rc3 2018-02-26 08:41:15 +01:00
events Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
hyperv KVM changes for 4.16 2018-02-10 13:16:35 -08:00
ia32
include x86/acpi: Add a new x86_init_acpi structure to x86_init_ops 2018-02-26 08:43:20 +01:00
kernel kdump, vmcoreinfo: Export pgtable_l5_enabled value 2018-03-12 09:43:56 +01:00
kvm Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
lib Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:31:51 -08:00
math-emu
mm x86/mm/sme: Disable stack protection for mem_encrypt_identity.c 2018-02-28 15:24:12 +01:00
net bpf, x64: implement retpoline for tail call 2018-02-22 15:31:42 -08:00
oprofile x86/oprofile: Fix bogus GCC-8 warning in nmi_setup() 2018-02-21 09:54:17 +01:00
pci pci-v4.16-changes 2018-02-06 09:59:40 -08:00
platform Linux 4.16-rc3 2018-02-26 08:41:15 +01:00
power x86/mm: Replace compile-time checks for 5-level paging with runtime-time checks 2018-02-16 10:48:49 +01:00
purgatory
ras
realmode
tools x86: Treat R_X86_64_PLT32 as R_X86_64_PC32 2018-02-22 09:01:10 -08:00
um Merge commit 'upstream-x86-entry' into WIP.x86/mm 2017-12-17 12:58:53 +01:00
video
xen x86/xen: Add pvh specific rsdp address retrieval function 2018-02-26 08:43:20 +01:00
.gitignore x86/build: Add arch/x86/tools/insn_decoder_test to .gitignore 2018-02-13 14:10:29 +01:00
Kbuild
Kconfig Linux 4.16-rc3 2018-02-26 08:41:15 +01:00
Kconfig.cpu x86/Kconfig: Explicitly enumerate i686-class CPUs in Kconfig 2018-02-16 10:36:39 +01:00
Kconfig.debug Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-30 13:01:09 -08:00
Makefile Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-14 15:30:02 -08:00
Makefile_32.cpu
Makefile.um