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    SubjectRe: [PATCH 00/35 v5] PTI support for x32
    Hi Linus,

    On Mon, Apr 16, 2018 at 08:32:46AM -0700, Linus Torvalds wrote:
    > Also, it would be nice to have performance numbers,

    Here are some numbers I gathered for Ingo on v2 of the patch-set:

    https://marc.info/?l=linux-kernel&m=151844711432661&w=2

    I don't think they significantly changed, but I can measure them again
    if needed.

    Besides those, what other numbers/tests are you interested in?

    > and check that the global page issues are at least fixed on 32-bit
    > too, since we screwed that up on x86-64 initially.
    >
    > On x86-32, the global pages are likely a bigger deal since there's no PCID.

    Okay, I verify if there are any global bits left in the page-tables.
    According to the PTDUMP_X86 the cpu_entry_area is mapped with G=1 (which
    should be fine?) and another 4M range in the kernel mapping. I need to
    check what that is.

    Thanks,

    Joerg


    >
    > Linus

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