From: Nadav Amit <namit@vmware.com>
To: Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Hugh Dickins <hughd@google.com>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>, X86 ML <x86@kernel.org>,
Linux MM <linux-mm@kvack.org>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v2] x86/mm/tlb: ignore f->new_tlb_gen when zero
Date: Wed, 13 Jul 2022 00:33:19 +0000 [thread overview]
Message-ID: <3DC1239B-FBE4-4EE0-B0D1-641B64697712@vmware.com> (raw)
In-Reply-To: <7672923F-D439-4867-9418-B1F44EE5CC44@vmware.com>
On Jul 11, 2022, at 10:39 AM, Nadav Amit <namit@vmware.com> wrote:
> On Jul 10, 2022, at 4:28 PM, Nadav Amit <nadav.amit@gmail.com> wrote:
>
>> From: Nadav Amit <namit@vmware.com>
>>
>> Commit aa44284960d5 ("x86/mm/tlb: Avoid reading mm_tlb_gen when
>> possible") introduced an optimization of skipping the flush if the TLB
>> generation that is flushed (as provided in flush_tlb_info) was already
>> flushed.
>
> Dave,
>
> Can you please review this patch today?
>
> I feel bad (for a good reason) for breaking swap/migration.
>
> Thanks,
> Nadav
Ping?
As you know, this really must go into 5.19 or otherwise aa44284960d5
reverted.
next prev parent reply other threads:[~2022-07-13 0:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-10 23:28 Nadav Amit
2022-07-11 17:39 ` Nadav Amit
2022-07-13 0:33 ` Nadav Amit [this message]
2022-07-13 0:49 ` Hugh Dickins
2022-07-13 0:50 ` Nadav Amit
2022-07-19 16:13 ` Dave Hansen
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