From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/9] arm64: KVM: debug infrastructure support
Date: Sun, 25 May 2014 16:34:21 +0100 [thread overview]
Message-ID: <20140525153421.GA3866@lvm> (raw)
In-Reply-To: <1400604945-25247-1-git-send-email-marc.zyngier@arm.com>
On Tue, May 20, 2014 at 05:55:36PM +0100, Marc Zyngier wrote:
> This patch series adds debug support, a key feature missing from the
> KVM/arm64 port.
>
> The main idea is to keep track of whether the debug registers are
> "dirty" (changed by the guest) or not. In this case, perform the usual
> save/restore dance, for one run only. It means we only have a penalty
> if a guest is actively using the debug registers.
>
> The amount of registers is properly frightening, but CPUs actually
> only implement a subset of them. Also, there is a number of registers
> we don't bother emulating (things having to do with external debug and
> OSlock).
What is the rationale about not having to deal with external debug and
OSlock?
-Christoffer
next prev parent reply other threads:[~2014-05-25 15:34 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-20 16:55 [PATCH v2 0/9] arm64: KVM: debug infrastructure support Marc Zyngier
2014-05-20 16:55 ` [PATCH v2 1/9] arm64: KVM: rename pm_fake handler to trap_raz_wi Marc Zyngier
2014-05-25 15:34 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 2/9] arm64: move DBG_MDSCR_* to asm/debug-monitors.h Marc Zyngier
2014-05-25 15:34 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 3/9] arm64: KVM: add trap handlers for AArch64 debug registers Marc Zyngier
2014-05-25 15:34 ` Christoffer Dall
2014-05-28 10:27 ` Marc Zyngier
2014-05-20 16:55 ` [PATCH v2 4/9] arm64: KVM: common infrastructure for handling AArch32 CP14/CP15 Marc Zyngier
2014-05-25 15:34 ` Christoffer Dall
2014-05-28 10:34 ` Marc Zyngier
2014-05-20 16:55 ` [PATCH v2 5/9] arm64: KVM: use separate tables for AArch32 32 and 64bit traps Marc Zyngier
2014-05-25 15:35 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 6/9] arm64: KVM: check ordering of all system register tables Marc Zyngier
2014-05-25 15:35 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 7/9] arm64: KVM: add trap handlers for AArch32 debug registers Marc Zyngier
2014-05-25 15:35 ` Christoffer Dall
2014-05-28 16:00 ` Marc Zyngier
2014-05-29 8:53 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 8/9] arm64: KVM: implement lazy world switch for " Marc Zyngier
2014-05-25 15:35 ` Christoffer Dall
2014-05-20 16:55 ` [PATCH v2 9/9] arm64: KVM: enable trapping of all " Marc Zyngier
2014-05-25 15:36 ` Christoffer Dall
2014-05-28 16:10 ` Marc Zyngier
2014-05-29 8:55 ` Christoffer Dall
2014-05-25 15:34 ` Christoffer Dall [this message]
2014-05-28 9:56 ` [PATCH v2 0/9] arm64: KVM: debug infrastructure support Marc Zyngier
2014-05-28 9:58 ` Christoffer Dall
2014-05-28 10:11 ` Marc Zyngier
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