Re: [PATCH] mmap.2: describe the 5level paging hack

2019-02-25 Thread Michael Kerrisk (man-pages)
On 2/11/19 5:36 PM, Jann Horn wrote: > The manpage is missing information about the compatibility hack for > 5-level paging that went in in 4.14, around commit ee00f4a32a76 ("x86/mm: > Allow userspace have mappings above 47-bit"). Add some information about > that. > > While I don't think any

Re: [PATCH] mmap.2: describe the 5level paging hack

2019-02-15 Thread Michael Ellerman
Jann Horn writes: > The manpage is missing information about the compatibility hack for > 5-level paging that went in in 4.14, around commit ee00f4a32a76 ("x86/mm: > Allow userspace have mappings above 47-bit"). Add some information about > that. Thanks for doing this. > While I don't think

Re: [PATCH] mmap.2: describe the 5level paging hack

2019-02-13 Thread Will Deacon
Hi Jann, On Mon, Feb 11, 2019 at 05:36:53PM +0100, Jann Horn wrote: > The manpage is missing information about the compatibility hack for > 5-level paging that went in in 4.14, around commit ee00f4a32a76 ("x86/mm: > Allow userspace have mappings above 47-bit"). Add some information about > that.

Re: [PATCH] mmap.2: describe the 5level paging hack

2019-02-12 Thread Kirill A. Shutemov
On Mon, Feb 11, 2019 at 05:36:53PM +0100, Jann Horn wrote: > The manpage is missing information about the compatibility hack for > 5-level paging that went in in 4.14, around commit ee00f4a32a76 ("x86/mm: > Allow userspace have mappings above 47-bit"). Add some information about > that. > > While

[PATCH] mmap.2: describe the 5level paging hack

2019-02-11 Thread Jann Horn
The manpage is missing information about the compatibility hack for 5-level paging that went in in 4.14, around commit ee00f4a32a76 ("x86/mm: Allow userspace have mappings above 47-bit"). Add some information about that. While I don't think any hardware supporting this is shipping yet (?), I