From: Zhichao Huang <zhichao.huang@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>,
kvm@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
marc.zyngier@arm.com, jan.kiszka@siemens.com,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
Will Deacon <will.deacon@arm.com>,
open list <linux-kernel@vger.kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
dahi@linux.vnet.ibm.com, linux-arm-kernel@lists.infradead.org,
r65777@freescale.com, pbonzini@redhat.com, bp@suse.de,
Gleb Natapov <gleb@kernel.org>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v2 06/10] KVM: arm64: guest debug, add SW break point support
Date: Tue, 21 Apr 2015 22:42:45 +0800 [thread overview]
Message-ID: <CADt_bzh=zhSmoQnKxp5cUski3S=riYG5AnmCsm=qeTSjm=cprA@mail.gmail.com> (raw)
In-Reply-To: <1427814488-28467-7-git-send-email-alex.bennee@linaro.org>
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On Tue, Mar 31, 2015 at 04:08:04PM +0100, Alex Bennée wrote:
> This adds support for SW breakpoints inserted by userspace.
>
> We do this by trapping all BKPT exceptions in the
> hypervisor (MDCR_EL2_TDE).
why should we trap all debug exceptions?
The trap for cp14 register r/w seems enough to record relevant
informations to context switch the dbg register while neccessary.
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next prev parent reply other threads:[~2015-04-21 14:42 UTC|newest]
Thread overview: 199+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-31 15:07 [PATCH v2 00/10] KVM Guest Debug support for arm64 Alex Bennée
2015-03-31 15:07 ` Alex Bennée
2015-03-31 15:07 ` [PATCH v2 01/10] KVM: add commentary for kvm_debug_exit_arch struct Alex Bennée
2015-03-31 15:07 ` Alex Bennée
2015-03-31 15:07 ` Alex Bennée
2015-04-01 15:38 ` David Hildenbrand
2015-04-01 15:38 ` David Hildenbrand
2015-04-01 15:38 ` David Hildenbrand
2015-04-01 15:38 ` David Hildenbrand
2015-04-10 12:58 ` Andrew Jones
2015-04-10 12:58 ` Andrew Jones
2015-04-13 10:57 ` Christoffer Dall
2015-04-13 10:57 ` Christoffer Dall
2015-04-13 10:57 ` Christoffer Dall
2015-03-31 15:08 ` [PATCH v2 02/10] KVM: define common __KVM_GUESTDBG_USE_SW/HW_BP values Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-10 12:59 ` Andrew Jones
2015-04-10 12:59 ` Andrew Jones
2015-04-10 12:59 ` Andrew Jones
2015-04-10 12:59 ` Andrew Jones
2015-04-13 11:55 ` Christoffer Dall
2015-04-13 11:55 ` Christoffer Dall
2015-04-13 11:55 ` Christoffer Dall
2015-04-13 11:55 ` Christoffer Dall
2015-04-13 14:51 ` Alex Bennée
2015-04-13 14:51 ` Alex Bennée
2015-04-13 14:51 ` Alex Bennée
2015-04-13 14:51 ` Alex Bennée
2015-04-13 15:07 ` Andrew Jones
2015-04-13 15:07 ` Andrew Jones
2015-04-13 15:07 ` Andrew Jones
2015-04-13 15:07 ` Andrew Jones
2015-04-14 8:24 ` Christoffer Dall
2015-04-14 8:24 ` Christoffer Dall
2015-04-14 8:24 ` Christoffer Dall
2015-04-14 8:24 ` Christoffer Dall
2015-04-14 8:24 ` Christoffer Dall
2015-03-31 15:08 ` [PATCH v2 03/10] KVM: arm: guest debug, define API headers Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-01 15:46 ` David Hildenbrand
2015-04-01 15:46 ` David Hildenbrand
2015-04-01 15:46 ` David Hildenbrand
2015-04-01 16:01 ` Alex Bennée
2015-04-01 16:01 ` Alex Bennée
2015-04-01 16:05 ` David Hildenbrand
2015-04-01 16:05 ` David Hildenbrand
2015-04-01 16:09 ` Peter Maydell
2015-04-01 16:09 ` Peter Maydell
2015-04-10 13:05 ` Andrew Jones
2015-04-10 13:05 ` Andrew Jones
2015-04-10 13:05 ` Andrew Jones
2015-04-13 12:08 ` Christoffer Dall
2015-04-13 12:08 ` Christoffer Dall
2015-04-23 9:54 ` Alex Bennée
2015-04-23 9:54 ` Alex Bennée
2015-04-23 9:54 ` Alex Bennée
2015-03-31 15:08 ` [PATCH v2 04/10] KVM: arm: guest debug, add stub KVM_SET_GUEST_DEBUG ioctl Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-01 15:55 ` David Hildenbrand
2015-04-01 15:55 ` David Hildenbrand
2015-04-01 15:55 ` David Hildenbrand
2015-04-09 12:28 ` Andrew Jones
2015-04-09 12:28 ` Andrew Jones
2015-04-09 12:28 ` Andrew Jones
2015-04-09 14:19 ` Alex Bennée
2015-04-09 14:19 ` Alex Bennée
2015-04-09 14:19 ` Alex Bennée
2015-04-13 12:12 ` Christoffer Dall
2015-04-13 12:12 ` Christoffer Dall
2015-04-13 12:12 ` Christoffer Dall
2015-04-14 6:31 ` David Hildenbrand
2015-04-14 6:31 ` David Hildenbrand
2015-04-14 6:31 ` David Hildenbrand
2015-04-14 8:03 ` Alex Bennée
2015-04-14 8:03 ` Alex Bennée
2015-04-14 8:03 ` Alex Bennée
2015-03-31 15:08 ` [PATCH v2 05/10] KVM: arm: introduce kvm_arch_setup/clear_debug() Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-01 16:28 ` David Hildenbrand
2015-04-01 16:28 ` David Hildenbrand
2015-04-01 16:28 ` David Hildenbrand
2015-04-09 12:56 ` Andrew Jones
2015-04-09 12:56 ` Andrew Jones
2015-04-09 12:56 ` Andrew Jones
2015-04-09 14:18 ` Alex Bennée
2015-04-09 14:18 ` Alex Bennée
2015-04-09 12:55 ` Andrew Jones
2015-04-09 12:55 ` Andrew Jones
2015-04-09 12:55 ` Andrew Jones
2015-04-13 14:36 ` Christoffer Dall
2015-04-13 14:36 ` Christoffer Dall
2015-04-13 14:48 ` Christoffer Dall
2015-04-13 14:48 ` Christoffer Dall
2015-04-13 14:48 ` Christoffer Dall
2015-04-13 15:29 ` Alex Bennée
2015-04-13 15:29 ` Alex Bennée
2015-04-13 15:29 ` Alex Bennée
2015-03-31 15:08 ` [PATCH v2 06/10] KVM: arm64: guest debug, add SW break point support Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-02 12:52 ` David Hildenbrand
2015-04-02 12:52 ` David Hildenbrand
2015-04-02 12:52 ` David Hildenbrand
2015-04-02 14:06 ` Alex Bennée
2015-04-02 14:06 ` Alex Bennée
2015-04-02 14:06 ` Alex Bennée
2015-04-10 13:09 ` Andrew Jones
2015-04-10 13:09 ` Andrew Jones
2015-04-10 13:09 ` Andrew Jones
2015-04-14 8:25 ` Christoffer Dall
2015-04-14 8:25 ` Christoffer Dall
2015-04-23 14:26 ` Alex Bennée
2015-04-23 14:26 ` Alex Bennée
2015-04-23 14:26 ` Alex Bennée
2015-04-27 20:04 ` Christoffer Dall
2015-04-27 20:04 ` Christoffer Dall
2015-04-27 21:57 ` Peter Maydell
2015-04-27 21:57 ` Peter Maydell
2015-04-28 8:42 ` Alex Bennée
2015-04-28 8:42 ` Alex Bennée
2015-04-28 8:42 ` Alex Bennée
2015-04-28 9:34 ` Peter Maydell
2015-04-28 9:34 ` Peter Maydell
2015-04-28 12:56 ` Christoffer Dall
2015-04-28 12:56 ` Christoffer Dall
2015-04-28 14:37 ` Alex Bennée
2015-04-28 14:37 ` Alex Bennée
2015-04-28 14:37 ` Alex Bennée
2015-04-29 8:10 ` Christoffer Dall
2015-04-29 8:10 ` Christoffer Dall
2015-04-29 9:18 ` Alex Bennée
2015-04-29 9:18 ` Alex Bennée
2015-04-29 9:18 ` Alex Bennée
2015-04-29 10:38 ` Christoffer Dall
2015-04-29 10:38 ` Christoffer Dall
2015-04-29 15:08 ` Alex Bennée
2015-04-29 15:08 ` Alex Bennée
2015-04-29 15:08 ` Alex Bennée
2015-04-29 19:20 ` Christoffer Dall
2015-04-29 19:20 ` Christoffer Dall
2015-04-21 14:42 ` Zhichao Huang [this message]
2015-04-22 9:46 ` Alex Bennée
2015-04-22 9:46 ` Alex Bennée
2015-04-22 9:46 ` Alex Bennée
2015-03-31 15:08 ` [PATCH v2 07/10] KVM: arm64: guest debug, add support for single-step Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-09 13:24 ` Andrew Jones
2015-04-09 13:24 ` Andrew Jones
2015-04-09 14:16 ` Alex Bennée
2015-04-09 14:16 ` Alex Bennée
2015-04-09 14:16 ` Alex Bennée
2015-04-14 8:27 ` Christoffer Dall
2015-04-14 8:27 ` Christoffer Dall
2015-04-14 8:27 ` Christoffer Dall
2015-03-31 15:08 ` [PATCH v2 08/10] KVM: arm64: guest debug, HW assisted debug support Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-10 12:25 ` Andrew Jones
2015-04-10 12:25 ` Andrew Jones
2015-04-10 12:25 ` Andrew Jones
2015-04-13 8:00 ` Alex Bennée
2015-04-13 8:00 ` Alex Bennée
2015-04-13 8:00 ` Alex Bennée
2015-04-14 10:23 ` Christoffer Dall
2015-04-14 10:23 ` Christoffer Dall
2015-04-14 10:17 ` Christoffer Dall
2015-04-14 10:17 ` Christoffer Dall
2015-04-14 10:17 ` Christoffer Dall
2015-03-31 15:08 ` [PATCH v2 09/10] KVM: arm64: trap nested debug register access Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-10 12:38 ` Andrew Jones
2015-04-10 12:38 ` Andrew Jones
2015-04-10 12:38 ` Andrew Jones
2015-04-13 7:59 ` Alex Bennée
2015-04-13 7:59 ` Alex Bennée
2015-04-13 7:59 ` Alex Bennée
2015-04-14 10:27 ` Christoffer Dall
2015-04-14 10:27 ` Christoffer Dall
2015-04-14 10:27 ` Christoffer Dall
2015-04-14 10:30 ` Christoffer Dall
2015-04-14 10:30 ` Christoffer Dall
2015-04-14 10:30 ` Christoffer Dall
2015-03-31 15:08 ` [PATCH v2 10/10] KVM: arm64: add trace points for guest_debug debug Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-03-31 15:08 ` Alex Bennée
2015-04-10 12:54 ` Andrew Jones
2015-04-10 12:54 ` Andrew Jones
2015-04-13 7:57 ` Alex Bennée
2015-04-13 7:57 ` Alex Bennée
2015-04-14 10:32 ` Christoffer Dall
2015-04-14 10:32 ` Christoffer Dall
2015-04-14 10:32 ` Christoffer Dall
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