From: Nadav Amit <namit@vmware.com>
To: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
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 00:50:58 +0000 [thread overview]
Message-ID: <16E81A47-8BCA-4E7B-AC33-9C12B7E7A9CF@vmware.com> (raw)
In-Reply-To: <b6bcd4c5-2311-451a-4792-6c2bc450b6@google.com>
On Jul 12, 2022, at 5:49 PM, Hugh Dickins <hughd@google.com> wrote:
> ⚠ External Email
>
> On Wed, 13 Jul 2022, Nadav Amit wrote:
>> 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.
>
> No, aa44284960d5 is not in 5.19-rc: it's in linux-next heading for 5.20.
Oh.. My bad. Thanks for clarifying Hugh.
next prev parent reply other threads:[~2022-07-13 0:51 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
2022-07-13 0:49 ` Hugh Dickins
2022-07-13 0:50 ` Nadav Amit [this message]
2022-07-19 16:13 ` Dave Hansen
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