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From: Andreas Mohr <andi@lisas.de>
To: Arkaprava Basu <arkaprava.basu@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: TLB flush question (x86_64)
Date: Sat, 17 Sep 2011 21:12:21 +0200	[thread overview]
Message-ID: <20110917191221.GA24295@rhlx01.hs-esslingen.de> (raw)
In-Reply-To: <CAErB21iHz_ToVzfU8aPkY8OW5iMOTPgPMdQBsmxo=5YUCMb6Aw@mail.gmail.com>

Hi,

decided to reply since there hasn't been any activity yet.

> Is there any particular reason why
> the entire address space is flushed from the tlb while only a range of
> virtual address space was supposedly required to be flushed?

While this particular function has actually changed in less medieval
kernel versions, it would be nice if someone knew an answer to that,
especially since TLB activity may have grave performance implications.

Andreas Mohr

  reply	other threads:[~2011-09-17 19:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-03  5:47 TLB flush question (x86_64) Arkaprava Basu
2011-09-17 19:12 ` Andreas Mohr [this message]
2011-09-17 23:37   ` Brian Gerst
2011-09-18  9:35     ` Borislav Petkov

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