From: Michael Ellerman <mpe@ellerman•id.au>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux•ibm.com>,
linux-mm@kvack•org, akpm@linux-foundation•org
Cc: joel@joelfernandes•org,
"Aneesh Kumar K.V" <aneesh.kumar@linux•ibm.com>,
linuxppc-dev@lists•ozlabs.org, npiggin@gmail•com,
kaleshsingh@google•com
Subject: Re: [PATCH v4 8/9] mm/mremap: Allow arch runtime override
Date: Tue, 20 Apr 2021 13:52:09 +1000 [thread overview]
Message-ID: <87bla9d34m.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20210414085915.301189-9-aneesh.kumar@linux.ibm.com>
"Aneesh Kumar K.V" <aneesh.kumar@linux•ibm.com> writes:
> Architectures like ppc64 support faster mremap only with radix
> translation. Hence allow a runtime check w.r.t support for fast mremap.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux•ibm.com>
> ---
> arch/powerpc/include/asm/tlb.h | 6 ++++++
> mm/mremap.c | 15 ++++++++++++++-
> 2 files changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h
> index 160422a439aa..058918a7cd3c 100644
> --- a/arch/powerpc/include/asm/tlb.h
> +++ b/arch/powerpc/include/asm/tlb.h
> @@ -83,5 +83,11 @@ static inline int mm_is_thread_local(struct mm_struct *mm)
> }
> #endif
>
> +#define arch_supports_page_tables_move arch_supports_page_tables_move
> +static inline bool arch_supports_page_tables_move(void)
> +{
> + return radix_enabled();
> +}
Not sure it's worth a respin on its own, but page table*s* move is
slightly strange phrasing.
arch_supports_move_page_tables() or arch_supports_page_table_move()
would be more typical.
cheers
next prev parent reply other threads:[~2021-04-20 3:52 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 8:59 [PATCH v4 0/9] Speedup mremap on ppc64 Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 1/9] selftest/mremap_test: Update the test to handle pagesize other than 4K Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 2/9] selftest/mremap_test: Avoid crash with static build Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 3/9] mm/mremap: Use pmd/pud_poplulate to update page table entries Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 4/9] powerpc/mm/book3s64: Fix possible build error Aneesh Kumar K.V
2021-04-20 3:43 ` Michael Ellerman
2021-04-14 8:59 ` [PATCH v4 5/9] powerpc/mm/book3s64: Update tlb flush routines to take a page walk cache flush argument Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 6/9] mm/mremap: Use range flush that does TLB and page walk cache flush Aneesh Kumar K.V
2021-04-20 3:47 ` Michael Ellerman
2021-04-20 4:17 ` Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 7/9] mm/mremap: Move TLB flush outside page table lock Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 8/9] mm/mremap: Allow arch runtime override Aneesh Kumar K.V
2021-04-20 3:52 ` Michael Ellerman [this message]
2021-04-20 4:30 ` Aneesh Kumar K.V
2021-04-14 8:59 ` [PATCH v4 9/9] powerpc/mm: Enable move pmd/pud Aneesh Kumar K.V
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87bla9d34m.fsf@mpe.ellerman.id.au \
--to=mpe@ellerman$(echo .)id.au \
--cc=akpm@linux-foundation$(echo .)org \
--cc=aneesh.kumar@linux$(echo .)ibm.com \
--cc=joel@joelfernandes$(echo .)org \
--cc=kaleshsingh@google$(echo .)com \
--cc=linux-mm@kvack$(echo .)org \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=npiggin@gmail$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox