From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] New algorithm for ASID allocation and rollover
Date: Sun, 19 Aug 2012 15:21:37 +0000 [thread overview]
Message-ID: <201208191521.37460.arnd@arndb.de> (raw)
In-Reply-To: <1345049642-29704-1-git-send-email-will.deacon@arm.com>
On Wednesday 15 August 2012, Will Deacon wrote:
> After some discussion, it became apparent that tracking the ASIDs
> currently active on the cores in the system means that, on rollover, we
> can automatically reserve those that are in use without having to stop
> the world.
Just a question for my general understanding of how this is done: How do
you know if an ASID is active or not? Do you broadcast flush an address
space completely when the struct mm goes away, or do you keep track of
which CPUs had TLBs in an ASIC when it went away and then flush that ASID
when you reuse it on that CPU?
Arnd
next prev parent reply other threads:[~2012-08-19 15:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-15 16:53 [PATCH 0/3] New algorithm for ASID allocation and rollover Will Deacon
2012-08-15 16:54 ` [PATCH 1/3] ARM: mm: remove IPI broadcasting on ASID rollover Will Deacon
2012-08-15 16:54 ` [PATCH 2/3] ARM: mm: avoid taking ASID spinlock on fastpath Will Deacon
2012-08-15 16:54 ` [PATCH 3/3] ARM: mm: use bitmap operations when allocating new ASIDs Will Deacon
2012-08-15 17:05 ` [PATCH 0/3] New algorithm for ASID allocation and rollover Marc Zyngier
2012-08-19 15:21 ` Arnd Bergmann [this message]
2012-08-20 12:51 ` Will Deacon
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