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    Subject[PATCH 0/7] Misc GDT fixes and a cleanup
    Date
    Hi all-

    This applies to tip:x86/mm. For ease of testing, the series is here, too:

    https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/tag/?h=review_20170322_gdt_and_wp

    This fixes a few issues, most of which appear to be rather old. For
    whatever reason, Thomas' GDT series unearthed them. (And one is a
    genuine bug in Thomas' code but, in his defense, he might have
    cut-and-pasted it verbatim from the identical bug in the EFI code.)

    The last three patches are cleanups I did while tracking these down.

    Boris, any chance you could test this series on Xen? The 64-bit
    case works for me, but I'm having issues testing on 32-bit right
    now.

    Ingo, the first patch should address your concerns from the earlier
    version.

    Andy Lutomirski (7):
    selftests/x86/ldt_gdt_32: Work around a glibc sigaction bug
    x86/gdt: Fix setup_fixmap_gdt() to use the correct PA
    x86/efi/32: Fix EFI on systems where the percpu GDT is virtually
    mapped
    x86/boot/32: Defer resyncing initial_page_table until percpu is set up
    x86/gdt: Get rid of the get_*_gdt_*_vaddr() helpers
    x86/xen/gdt: Use X86_FEATURE_XENPV instead of globals for the GDT
    fixup
    x86/boot/32: Rewrite test_wp_bit()

    arch/x86/include/asm/desc.h | 21 +++-------------
    arch/x86/include/asm/processor.h | 2 --
    arch/x86/kernel/cpu/common.c | 28 ++++++++++++---------
    arch/x86/kernel/cpu/proc.c | 5 ++--
    arch/x86/kernel/setup.c | 17 -------------
    arch/x86/kernel/setup_percpu.c | 21 ++++++++++++++++
    arch/x86/kvm/vmx.c | 4 +--
    arch/x86/mm/init_32.c | 44 +++++++--------------------------
    arch/x86/platform/efi/efi_32.c | 2 +-
    arch/x86/xen/enlighten.c | 4 ---
    tools/testing/selftests/x86/ldt_gdt.c | 46 +++++++++++++++++++++++++++++++++++
    11 files changed, 101 insertions(+), 93 deletions(-)

    --
    2.9.3

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