From: Corneliu ZUZU <czuzu@bitdefender.com>
To: Julien Grall <julien.grall@arm.com>, xen-devel@lists.xen.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Tamas K Lengyel <tamas@tklengyel.com>,
Razvan Cojocaru <rcojocaru@bitdefender.com>
Subject: Re: [PATCH 7/7] vm-event/arm: implement support for control-register write vm-events
Date: Thu, 16 Jun 2016 22:24:48 +0300 [thread overview]
Message-ID: <b45b1fcc-499b-5bdb-aa95-553e77dc0620@bitdefender.com> (raw)
In-Reply-To: <5762B725.4010107@arm.com>
On 6/16/2016 5:26 PM, Julien Grall wrote:
> Hello Corneliu,
>
> On 16/06/16 15:13, Corneliu ZUZU wrote:
>> Add ARM support for control-register write monitoring through the
>> vm-events
>> subsystem.
>>
>> Chosen ARM system control-registers that can be monitored are:
>> - VM_EVENT_ARM_SCTLR: AArch32 SCTLR, AArch64 SCTLR_EL1
>> - VM_EVENT_ARM_TTBR{0,1}: AArch32 TTBR{0,1}, AArch64 TTBR{0,1}_EL1
>> - VM_EVENT_ARM_TTBCR: AArch32 TTBCR, AArch64 TCR_EL1
>>
>> Trapping of write operations of these registers was attained by
>> setting the
>> HCR_EL2.TVM / HCR.TVM bit.
>>
>> Signed-off-by: Corneliu ZUZU <czuzu@bitdefender.com>
>> ---
>> MAINTAINERS | 1 +
>> xen/arch/arm/Makefile | 1 +
>> xen/arch/arm/traps.c | 126 +++++++++++++++++++-
>> xen/arch/arm/vm_event.c | 112 ++++++++++++++++++
>> xen/common/monitor.c | 2 -
>> xen/common/vm_event.c | 2 -
>> xen/include/asm-arm/domain.h | 30 +++++
>> xen/include/asm-arm/traps.h | 253
>> +++++++++++++++++++++++++++++++++++++++++
>> xen/include/asm-arm/vm_event.h | 22 +++-
>> xen/include/public/vm_event.h | 8 +-
>> xen/include/xen/monitor.h | 2 -
>> xen/include/xen/vm_event.h | 2 -
>> 12 files changed, 543 insertions(+), 18 deletions(-)
>
> I think this patch would benefit to be split in multiple patches to
> ease the review and also describe the infrastructure you have
> introduced (TVM_* & co).
>
> I will review in detail later.
>
> Regards,
>
Hi Julien. Yes, I agree that it's complex, I would have preferred to
split it up too and I actually tried, but the changes are tightly
coupled and they don't seem to be 'split-able'.
Corneliu.
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next prev parent reply other threads:[~2016-06-16 19:24 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-16 14:04 [PATCH 0/7] vm-event: Implement ARM support for control-register writes Corneliu ZUZU
2016-06-16 14:06 ` [PATCH 1/7] minor (formatting) fixes Corneliu ZUZU
2016-06-16 14:24 ` Jan Beulich
2016-06-16 19:19 ` Corneliu ZUZU
2016-06-17 7:06 ` Jan Beulich
2016-06-17 10:46 ` Corneliu ZUZU
2016-06-16 16:02 ` Tamas K Lengyel
2016-06-17 8:33 ` Corneliu ZUZU
2016-06-17 8:36 ` Razvan Cojocaru
2016-06-17 9:29 ` Andrew Cooper
2016-06-17 9:35 ` Jan Beulich
2016-06-17 9:33 ` Jan Beulich
2016-06-17 9:36 ` Razvan Cojocaru
2016-06-17 9:40 ` Jan Beulich
2016-06-17 9:42 ` Razvan Cojocaru
2016-06-17 19:05 ` Tamas K Lengyel
2016-06-16 14:07 ` [PATCH 2/7] vm-event: VM_EVENT_FLAG_DENY requires VM_EVENT_FLAG_VCPU_PAUSED Corneliu ZUZU
2016-06-16 16:11 ` Tamas K Lengyel
2016-06-17 8:43 ` Corneliu ZUZU
2016-06-21 11:26 ` Corneliu ZUZU
2016-06-21 15:09 ` Tamas K Lengyel
2016-06-22 8:34 ` Corneliu ZUZU
2016-06-16 14:08 ` [PATCH 3/7] vm-event: introduce vm_event_vcpu_enter Corneliu ZUZU
2016-06-16 14:51 ` Jan Beulich
2016-06-16 20:10 ` Corneliu ZUZU
2016-06-16 20:33 ` Razvan Cojocaru
2016-06-17 10:41 ` Corneliu ZUZU
2016-06-17 7:17 ` Jan Beulich
2016-06-17 11:13 ` Corneliu ZUZU
2016-06-17 11:27 ` Jan Beulich
2016-06-17 12:13 ` Corneliu ZUZU
2016-06-16 16:17 ` Tamas K Lengyel
2016-06-17 9:19 ` Corneliu ZUZU
2016-06-17 8:55 ` Julien Grall
2016-06-17 11:40 ` Corneliu ZUZU
2016-06-17 13:22 ` Julien Grall
2016-06-16 14:09 ` [PATCH 4/7] vm-event/x86: use vm_event_vcpu_enter properly Corneliu ZUZU
2016-06-16 15:00 ` Jan Beulich
2016-06-16 20:20 ` Corneliu ZUZU
2016-06-17 7:20 ` Jan Beulich
2016-06-17 11:23 ` Corneliu ZUZU
2016-06-16 16:27 ` Tamas K Lengyel
2016-06-17 9:24 ` Corneliu ZUZU
2016-06-16 14:10 ` [PATCH 5/7] x86: replace monitor_write_data.do_write with enum Corneliu ZUZU
2016-06-16 14:12 ` [PATCH 6/7] vm-event/arm: move hvm_event_cr->common vm_event_monitor_cr Corneliu ZUZU
2016-06-16 15:16 ` Jan Beulich
2016-06-17 8:25 ` Corneliu ZUZU
2016-06-17 8:38 ` Jan Beulich
2016-06-17 11:31 ` Corneliu ZUZU
2016-06-21 7:08 ` Corneliu ZUZU
2016-06-21 7:20 ` Jan Beulich
2016-06-21 15:22 ` Tamas K Lengyel
2016-06-22 6:33 ` Jan Beulich
2016-06-16 16:55 ` Tamas K Lengyel
2016-06-17 10:37 ` Corneliu ZUZU
2016-06-16 14:13 ` [PATCH 7/7] vm-event/arm: implement support for control-register write vm-events Corneliu ZUZU
2016-06-16 14:26 ` Julien Grall
2016-06-16 19:24 ` Corneliu ZUZU [this message]
2016-06-16 21:28 ` Julien Grall
2016-06-17 11:46 ` Corneliu ZUZU
2016-06-16 16:49 ` Julien Grall
2016-06-17 10:36 ` Corneliu ZUZU
2016-06-17 13:18 ` Julien Grall
2016-06-22 16:35 ` Corneliu ZUZU
2016-06-22 17:17 ` Julien Grall
2016-06-22 18:39 ` Corneliu ZUZU
2016-06-22 19:37 ` Corneliu ZUZU
2016-06-22 19:41 ` Julien Grall
2016-06-23 5:31 ` Corneliu ZUZU
2016-06-23 5:49 ` Corneliu ZUZU
2016-06-23 11:11 ` Julien Grall
2016-06-24 9:32 ` Corneliu ZUZU
2016-06-23 11:00 ` Julien Grall
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