From: cdall@cs.columbia.edu (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/7] ARM: KVM: fix HYP mapping limitations around zero
Date: Wed, 3 Apr 2013 16:14:09 -0700 [thread overview]
Message-ID: <20130403231409.GB29227@gmail.com> (raw)
In-Reply-To: <1364909115-3810-3-git-send-email-marc.zyngier@arm.com>
On Tue, Apr 02, 2013 at 02:25:10PM +0100, Marc Zyngier wrote:
> The current code for creating HYP mapping doesn't like to wrap
> around zero, which prevents from mapping anything into the last
> page of the virtual address space.
>
> It doesn't take much effort to remove this limitation, making
> the code more consistent with the rest of the kernel in the process.
This is quite funny, the code used to behave like this, but
reviewers said that this was old fashioned mm-style code that was
unwanted and wrapping around zero should be avoided for all costs :)
In any case, I welcome the familiarity.
-Christoffer
next prev parent reply other threads:[~2013-04-03 23:14 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-02 13:25 [PATCH 0/7] ARM: KVM: Revamping the HYP init code for fun and profit Marc Zyngier
2013-04-02 13:25 ` [PATCH 1/7] ARM: KVM: simplify HYP mapping population Marc Zyngier
2013-04-03 23:13 ` Christoffer Dall
2013-04-04 12:35 ` Marc Zyngier
2013-04-02 13:25 ` [PATCH 2/7] ARM: KVM: fix HYP mapping limitations around zero Marc Zyngier
2013-04-03 23:14 ` Christoffer Dall [this message]
2013-04-04 12:40 ` Marc Zyngier
2013-04-02 13:25 ` [PATCH 3/7] ARM: KVM: move to a KVM provided HYP idmap Marc Zyngier
2013-04-03 9:43 ` Will Deacon
2013-04-03 9:46 ` Marc Zyngier
2013-04-03 23:14 ` Christoffer Dall
2013-04-02 13:25 ` [PATCH 4/7] ARM: KVM: enforce page alignment for identity mapped code Marc Zyngier
2013-04-03 9:50 ` Will Deacon
2013-04-03 10:00 ` Marc Zyngier
2013-04-03 23:15 ` Christoffer Dall
2013-04-04 10:47 ` Marc Zyngier
2013-04-04 15:32 ` Christoffer Dall
2013-04-02 13:25 ` [PATCH 5/7] ARM: KVM: parametrize HYP page table freeing Marc Zyngier
2013-04-03 23:15 ` Christoffer Dall
2013-04-02 13:25 ` [PATCH 6/7] ARM: KVM: switch to a dual-step HYP init code Marc Zyngier
2013-04-03 10:07 ` Will Deacon
2013-04-03 10:38 ` Marc Zyngier
2013-04-03 23:15 ` Christoffer Dall
2013-04-04 11:05 ` Marc Zyngier
2013-04-03 23:15 ` Christoffer Dall
2013-04-04 12:52 ` Marc Zyngier
2013-04-04 22:10 ` Geoff Levand
2013-04-05 9:08 ` Marc Zyngier
2013-04-05 16:46 ` Geoff Levand
2013-04-05 16:54 ` Marc Zyngier
2013-04-18 15:54 ` Russell King - ARM Linux
2013-04-18 16:01 ` Marc Zyngier
2013-04-02 13:25 ` [PATCH 7/7] ARM: KVM: perform HYP initilization for hotplugged CPUs Marc Zyngier
2013-04-03 23:16 ` Christoffer Dall
2013-04-03 23:18 ` [PATCH 0/7] ARM: KVM: Revamping the HYP init code for fun and profit Christoffer Dall
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