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From: Auger Eric <eric.auger@redhat.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Ricardo Koller <ricarkol@google.com>,
	kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
	pbonzini@redhat.com, drjones@redhat.com,
	alexandru.elisei@arm.com
Subject: Re: [PATCH v2 4/5] KVM: selftests: Add exception handling support for aarch64
Date: Wed, 12 May 2021 10:52:09 +0200	[thread overview]
Message-ID: <628dca08-4108-8be1-9bea-8c388f28401e@redhat.com> (raw)
In-Reply-To: <348b978aad60db6af7ba9c9ce51bbd87@kernel.org>

Hi,

On 5/12/21 10:33 AM, Marc Zyngier wrote:
> On 2021-05-12 09:19, Auger Eric wrote:
>> Hi Ricardo,
>>
>> On 5/12/21 9:27 AM, Ricardo Koller wrote:
>>> On Fri, May 07, 2021 at 04:08:07PM +0200, Auger Eric wrote:
>>>> Hi Ricardo,
>>>>
>>>> On 5/6/21 9:14 PM, Ricardo Koller wrote:
>>>>> On Thu, May 06, 2021 at 02:30:17PM +0200, Auger Eric wrote:
>>>>>> Hi Ricardo,
>>>>>>
>>>>>
>>>>> Hi Eric,
>>>>>
>>>>> Thank you very much for the test.
>>>>>
>>>>>> On 5/3/21 9:12 PM, Ricardo Koller wrote:
>>>>>>> On Mon, May 03, 2021 at 11:32:39AM +0100, Marc Zyngier wrote:
>>>>>>>> On Sat, 01 May 2021 00:24:06 +0100,
>>>>>>>> Ricardo Koller <ricarkol@google.com> wrote:
>>>>>>>>>
>>>>>>>>> Add the infrastructure needed to enable exception handling in
>>>>>>>>> aarch64
>>>>>>>>> selftests. The exception handling defaults to an
>>>>>>>>> unhandled-exception
>>>>>>>>> handler which aborts the test, just like x86. These handlers
>>>>>>>>> can be
>>>>>>>>> overridden by calling vm_install_vector_handler(vector) or
>>>>>>>>> vm_install_exception_handler(vector, ec). The unhandled exception
>>>>>>>>> reporting from the guest is done using the ucall type
>>>>>>>>> introduced in a
>>>>>>>>> previous commit, UCALL_UNHANDLED.
>>>>>>>>>
>>>>>>>>> The exception handling code is heavily inspired on kvm-unit-tests.
>>>>>>
>>>>>> running the test on 5.12 I get
>>>>>>
>>>
>>> Hi Eric,
>>>
>>> I'm able to reproduce the failure you are seeing on 5.6, specifically
>>> with kernels older than this commit:
>>>
>>>   4942dc6638b0 KVM: arm64: Write arch.mdcr_el2 changes since last
>>> vcpu_load on VHE
>>>
>>> but not yet on v5.12. Could you share the commit of the kernel you are
>>> testing, please?
>>
>> my host is a 5.12 kernel (8404c9fbc84b)
> 
> Time to compare notes then. What HW are you using? Running VHE or not?
VHE yes. Cavium Sabre system.

Thanks

Eric
> 
> Thanks,
> 
>         M.


  reply	other threads:[~2021-05-12  8:52 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-30 23:24 [PATCH v2 0/5] KVM: selftests: arm64 exception handling and debug test Ricardo Koller
2021-04-30 23:24 ` [PATCH v2 1/5] KVM: selftests: Rename vm_handle_exception Ricardo Koller
2021-05-03 11:02   ` Andrew Jones
2021-05-06 12:27   ` Auger Eric
2021-04-30 23:24 ` [PATCH v2 2/5] KVM: selftests: Introduce UCALL_UNHANDLED for unhandled vector reporting Ricardo Koller
2021-05-03 11:09   ` Andrew Jones
2021-05-06 12:27     ` Auger Eric
2021-04-30 23:24 ` [PATCH v2 3/5] KVM: selftests: Move GUEST_ASSERT_EQ to utils header Ricardo Koller
2021-05-03 11:31   ` Andrew Jones
2021-04-30 23:24 ` [PATCH v2 4/5] KVM: selftests: Add exception handling support for aarch64 Ricardo Koller
2021-05-03 10:32   ` Marc Zyngier
2021-05-03 19:12     ` Ricardo Koller
2021-05-06 12:30       ` Auger Eric
2021-05-06 19:14         ` Ricardo Koller
2021-05-07 14:08           ` Auger Eric
2021-05-07 17:54             ` Ricardo Koller
2021-05-12  7:27             ` Ricardo Koller
2021-05-12  8:19               ` Auger Eric
2021-05-12  8:33                 ` Marc Zyngier
2021-05-12  8:52                   ` Auger Eric [this message]
2021-05-12 16:06                     ` Ricardo Koller
2021-05-12 12:59         ` Zenghui Yu
2021-05-12 13:43           ` Marc Zyngier
2021-05-12 16:03             ` Ricardo Koller
2021-05-12 16:18               ` Marc Zyngier
2021-05-12 21:39                 ` Ricardo Koller
2021-05-07 14:31       ` Marc Zyngier
2021-05-07 18:02         ` Ricardo Koller
2021-05-03 12:39   ` Andrew Jones
2021-04-30 23:24 ` [PATCH v2 5/5] KVM: selftests: Add aarch64/debug-exceptions test Ricardo Koller
2021-05-03 12:49   ` Andrew Jones
2021-05-24 12:14 ` [PATCH v2 0/5] KVM: selftests: arm64 exception handling and debug test Paolo Bonzini
2021-05-24 12:59   ` Marc Zyngier

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