Re: [PATCH v19 04/15] mm: untag user pointers passed to memory syscalls

2019-08-09 Thread Catalin Marinas
On Tue, Jul 23, 2019 at 07:58:41PM +0200, Andrey Konovalov wrote: > This patch is a part of a series that extends kernel ABI to allow to pass > tagged user pointers (with the top byte set to something else other than > 0x00) as syscall arguments. > > This patch allows tagged pointers to be passed

[PATCH v19 04/15] mm: untag user pointers passed to memory syscalls

2019-07-23 Thread Andrey Konovalov
This patch is a part of a series that extends kernel ABI to allow to pass tagged user pointers (with the top byte set to something else other than 0x00) as syscall arguments. This patch allows tagged pointers to be passed to the following memory syscalls: get_mempolicy, madvise, mbind, mincore,