From: Dave Hansen <dave@sr71.net>
To: Vlastimil Babka <vbabka@suse.cz>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org, dave.hansen@linux.intel.com,
akpm@linux-foundation.org, kirill.shutemov@linux.intel.com,
aarcange@redhat.com, n-horiguchi@ah.jp.nec.com
Subject: Re: [PATCH 01/31] mm, gup: introduce concept of "foreign" get_user_pages()
Date: Wed, 13 Jan 2016 11:16:35 -0800 [thread overview]
Message-ID: <5696A293.5020609@sr71.net> (raw)
In-Reply-To: <56969EE1.5060904@suse.cz>
On 01/13/2016 11:00 AM, Vlastimil Babka wrote:
>> > We leave a stub get_user_pages() around with a __deprecated
>> > warning.
> Hm when replying to previous version I assumed this is because there are many
> get_user_pages() callers remaining. But now I see there are just 3 drivers not
> converted by this patch? In that case I would favor to convert get_user_pages()
> to become what is now get_current_user_pages(). This would be much more
> consistent IMHO. We don't need to cater to out-of-tree modules?
>
> Sorry, I should have looked thoroughly on the previous reply, not just assume.
It's really hard to submit a set of patches that remove a well-known
API. New (in-tree) callers are always popping up, and you can see that
a few have popped up since I updated this the last time. Without
leaving the old stub around, it virtually guarantees that this patch
will cause breakage in -next for a release or two.
I'll fix up the other bits you commented on, btw!
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next prev parent reply other threads:[~2016-01-13 19:16 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 0:01 [PATCH 00/31] x86: Memory Protection Keys (v8) Dave Hansen
2016-01-07 0:01 ` [PATCH 01/31] mm, gup: introduce concept of "foreign" get_user_pages() Dave Hansen
2016-01-13 19:00 ` Vlastimil Babka
2016-01-13 19:16 ` Dave Hansen [this message]
2016-01-07 0:01 ` [PATCH 02/31] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen
2016-01-07 0:01 ` [PATCH 03/31] x86, pkeys: Add Kconfig option Dave Hansen
2016-01-07 0:01 ` [PATCH 04/31] x86, pkeys: cpuid bit definition Dave Hansen
2016-01-07 0:01 ` [PATCH 05/31] x86, pkeys: define new CR4 bit Dave Hansen
2016-01-07 0:01 ` [PATCH 06/31] x86, pkeys: add PKRU xsave fields and data structure(s) Dave Hansen
2016-01-07 0:01 ` [PATCH 07/31] x86, pkeys: PTE bits for storing protection key Dave Hansen
2016-01-07 0:01 ` [PATCH 08/31] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2016-01-07 0:01 ` [PATCH 09/31] x86, pkeys: store protection in high VMA flags Dave Hansen
2016-01-07 0:01 ` [PATCH 10/31] x86, pkeys: arch-specific protection bits Dave Hansen
2016-01-08 19:31 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 11/31] x86, pkeys: pass VMA down in to fault signal generation code Dave Hansen
2016-01-07 0:01 ` [PATCH 12/31] signals, pkeys: notify userspace about protection key faults Dave Hansen
2016-01-07 0:01 ` [PATCH 13/31] x86, pkeys: fill in pkey field in siginfo Dave Hansen
2016-01-07 0:01 ` [PATCH 14/31] x86, pkeys: add functions to fetch PKRU Dave Hansen
2016-01-08 19:32 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 15/31] mm: factor out VMA fault permission checking Dave Hansen
2016-01-07 0:01 ` [PATCH 16/31] x86, mm: simplify get_user_pages() PTE bit handling Dave Hansen
2016-01-07 0:01 ` [PATCH 17/31] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen
2016-01-07 0:01 ` [PATCH 18/31] mm: add gup flag to indicate "foreign" mm access Dave Hansen
2016-01-07 0:01 ` [PATCH 19/31] x86, pkeys: optimize fault handling in access_error() Dave Hansen
2016-01-07 0:01 ` [PATCH 20/31] x86, pkeys: differentiate instruction fetches Dave Hansen
2016-01-07 0:01 ` [PATCH 21/31] x86, pkeys: dump PKRU with other kernel registers Dave Hansen
2016-01-07 0:01 ` [PATCH 22/31] x86, pkeys: dump pkey from VMA in /proc/pid/smaps Dave Hansen
2016-01-07 0:01 ` [PATCH 23/31] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen
2016-01-07 0:01 ` [PATCH 24/31] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2016-01-07 0:01 ` [PATCH 25/31] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2016-01-07 0:01 ` [PATCH 26/31] x86, pkeys: add arch_validate_pkey() Dave Hansen
2016-01-08 19:34 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 27/31] x86: separate out LDT init from context init Dave Hansen
2016-01-07 0:01 ` [PATCH 28/31] x86, fpu: allow setting of XSAVE state Dave Hansen
2016-01-07 0:01 ` [PATCH 29/31] x86, pkeys: allow kernel to modify user pkey rights register Dave Hansen
2016-01-08 19:40 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 30/31] x86, pkeys: create an x86 arch_calc_vm_prot_bits() for VMA flags Dave Hansen
2016-01-08 19:40 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 31/31] x86, pkeys: execute-only support Dave Hansen
2016-01-07 21:02 ` Kees Cook
2016-01-07 22:25 ` Dave Hansen
2016-01-07 21:10 ` Andy Lutomirski
2016-01-07 22:13 ` Dave Hansen
2016-01-07 22:44 ` Andy Lutomirski
2016-01-08 19:51 ` Thomas Gleixner
2016-01-29 18:16 [PATCH 00/31] x86: Memory Protection Keys (v9) Dave Hansen
2016-01-29 18:16 ` [PATCH 01/31] mm, gup: introduce concept of "foreign" get_user_pages() Dave Hansen
2016-02-09 12:46 ` Ingo Molnar
2016-02-09 13:06 ` Ingo Molnar
2016-02-09 15:15 ` Dave Hansen
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