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From: Marc Zyngier <marc.zyngier@arm.com>
To: Kyle McMartin <kmcmarti@redhat.com>,
	AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Mark Rutland <Mark.Rutland@arm.com>,
	"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
	"christoffer.dall@linaro.org" <christoffer.dall@linaro.org>,
	"geoff@infradead.org" <geoff@infradead.org>,
	Catalin Marinas <Catalin.Marinas@arm.com>,
	Will Deacon <Will.Deacon@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"broonie@kernel.org" <broonie@kernel.org>,
	"david.griego@linaro.org" <david.griego@linaro.org>,
	"kexec@lists.infradead.org" <kexec@lists.infradead.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"freddy77@gmail.com" <freddy77@gmail.com>
Subject: Re: [RFC v2 0/5] arm64: kvm: reset hyp context for kexec
Date: Fri, 27 Mar 2015 15:37:04 +0000	[thread overview]
Message-ID: <55157920.3050003@arm.com> (raw)
In-Reply-To: <20150327153131.GK12400@redacted.bos.redhat.com>

On 27/03/15 15:31, Kyle McMartin wrote:
> On Thu, Mar 26, 2015 at 05:25:21PM +0900, AKASHI Takahiro wrote:
>> 1) Call kvm_cpu_reset() on non-boot cpus in reboot notifier
>>    We don't have to do so in kexec-specific case. But the current code runs
>>    the function on each cpu for safety since we use a general reboot hook.
>> 2) Flush D$ in kvm_cpu_reset()
>>    Currently doesn't do so because all the cpus are just going to shut down,
>>    and we actually flush D$ on boot cpu in Geoff's cpu_reset().
>> 3) Compatibility with arm implementation
>>    Frediano[2] is no longer working on this issue on arm as he left his
>>    company. But my approach here is based on a generic interface and can be
>>    applied to arm in a similar way.
>>
> 
> i'm hitting this when rebooting with your patchset applied...
> 
> Rebooting.
> [  236.260863] Kernel panic - not syncing: HYP panic:
> [  236.260863] PS:600003c9 PC:000003ffffff0830 ESR:0000000096000006

It would be interesting if you could find out what you have at offset
0x830 of hyp-init.o (the stack trace is for EL1, and is not going to
help much).

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC v2 0/5] arm64: kvm: reset hyp context for kexec
Date: Fri, 27 Mar 2015 15:37:04 +0000	[thread overview]
Message-ID: <55157920.3050003@arm.com> (raw)
In-Reply-To: <20150327153131.GK12400@redacted.bos.redhat.com>

On 27/03/15 15:31, Kyle McMartin wrote:
> On Thu, Mar 26, 2015 at 05:25:21PM +0900, AKASHI Takahiro wrote:
>> 1) Call kvm_cpu_reset() on non-boot cpus in reboot notifier
>>    We don't have to do so in kexec-specific case. But the current code runs
>>    the function on each cpu for safety since we use a general reboot hook.
>> 2) Flush D$ in kvm_cpu_reset()
>>    Currently doesn't do so because all the cpus are just going to shut down,
>>    and we actually flush D$ on boot cpu in Geoff's cpu_reset().
>> 3) Compatibility with arm implementation
>>    Frediano[2] is no longer working on this issue on arm as he left his
>>    company. But my approach here is based on a generic interface and can be
>>    applied to arm in a similar way.
>>
> 
> i'm hitting this when rebooting with your patchset applied...
> 
> Rebooting.
> [  236.260863] Kernel panic - not syncing: HYP panic:
> [  236.260863] PS:600003c9 PC:000003ffffff0830 ESR:0000000096000006

It would be interesting if you could find out what you have at offset
0x830 of hyp-init.o (the stack trace is for EL1, and is not going to
help much).

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: Kyle McMartin <kmcmarti@redhat.com>,
	AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Catalin Marinas <Catalin.Marinas@arm.com>,
	Will Deacon <Will.Deacon@arm.com>,
	Mark Rutland <Mark.Rutland@arm.com>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
	"geoff@infradead.org" <geoff@infradead.org>,
	"kexec@lists.infradead.org" <kexec@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"broonie@kernel.org" <broonie@kernel.org>,
	"david.griego@linaro.org" <david.griego@linaro.org>,
	"christoffer.dall@linaro.org" <christoffer.dall@linaro.org>,
	"freddy77@gmail.com" <freddy77@gmail.com>
Subject: Re: [RFC v2 0/5] arm64: kvm: reset hyp context for kexec
Date: Fri, 27 Mar 2015 15:37:04 +0000	[thread overview]
Message-ID: <55157920.3050003@arm.com> (raw)
In-Reply-To: <20150327153131.GK12400@redacted.bos.redhat.com>

On 27/03/15 15:31, Kyle McMartin wrote:
> On Thu, Mar 26, 2015 at 05:25:21PM +0900, AKASHI Takahiro wrote:
>> 1) Call kvm_cpu_reset() on non-boot cpus in reboot notifier
>>    We don't have to do so in kexec-specific case. But the current code runs
>>    the function on each cpu for safety since we use a general reboot hook.
>> 2) Flush D$ in kvm_cpu_reset()
>>    Currently doesn't do so because all the cpus are just going to shut down,
>>    and we actually flush D$ on boot cpu in Geoff's cpu_reset().
>> 3) Compatibility with arm implementation
>>    Frediano[2] is no longer working on this issue on arm as he left his
>>    company. But my approach here is based on a generic interface and can be
>>    applied to arm in a similar way.
>>
> 
> i'm hitting this when rebooting with your patchset applied...
> 
> Rebooting.
> [  236.260863] Kernel panic - not syncing: HYP panic:
> [  236.260863] PS:600003c9 PC:000003ffffff0830 ESR:0000000096000006

It would be interesting if you could find out what you have at offset
0x830 of hyp-init.o (the stack trace is for EL1, and is not going to
help much).

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

  reply	other threads:[~2015-03-27 15:37 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-26  8:25 [RFC v2 0/5] arm64: kvm: reset hyp context for kexec AKASHI Takahiro
2015-03-26  8:25 ` AKASHI Takahiro
2015-03-26  8:25 ` AKASHI Takahiro
2015-03-26  8:25 ` [RFC v2 1/5] arm64: kvm: add a cpu tear-down function AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25 ` [RFC v2 2/5] arm64: kvm: allow EL2 context to be reset on shutdown AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25 ` [RFC v2 3/5] arm64: kvm: add cpu reset hook for cpu hotplug AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25 ` [RFC v2 4/5] arm64: kvm: add cpu reset at module exit AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25 ` [RFC v2 5/5] arm: kvm: add stub implementation for kvm_cpu_reset() AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-26  8:25   ` AKASHI Takahiro
2015-03-27 15:31 ` [RFC v2 0/5] arm64: kvm: reset hyp context for kexec Kyle McMartin
2015-03-27 15:31   ` Kyle McMartin
2015-03-27 15:31   ` Kyle McMartin
2015-03-27 15:37   ` Marc Zyngier [this message]
2015-03-27 15:37     ` Marc Zyngier
2015-03-27 15:37     ` Marc Zyngier
2015-03-27 17:40     ` Kyle McMartin
2015-03-27 17:40       ` Kyle McMartin
2015-03-27 17:40       ` Kyle McMartin
2015-03-27 17:50       ` Marc Zyngier
2015-03-27 17:50         ` Marc Zyngier
2015-03-27 17:50         ` Marc Zyngier
2015-03-30  1:39       ` AKASHI Takahiro
2015-03-30  1:39         ` AKASHI Takahiro
2015-03-30  1:39         ` AKASHI Takahiro
2015-03-30  7:16         ` Marc Zyngier
2015-03-30  7:16           ` Marc Zyngier
2015-03-30  7:16           ` Marc Zyngier
2015-03-30  8:54           ` AKASHI Takahiro
2015-03-30  8:54             ` AKASHI Takahiro
2015-03-30  8:54             ` AKASHI Takahiro
2015-03-31  6:04             ` AKASHI Takahiro
2015-03-31  6:04               ` AKASHI Takahiro
2015-03-31  6:04               ` AKASHI Takahiro
2015-03-31  7:31               ` Marc Zyngier
2015-03-31  7:31                 ` Marc Zyngier
2015-03-31  7:31                 ` Marc Zyngier
2015-04-01  5:06                 ` AKASHI Takahiro
2015-04-01  5:06                   ` AKASHI Takahiro
2015-04-01  5:06                   ` AKASHI Takahiro
2015-04-01  9:05                   ` Marc Zyngier
2015-04-01  9:05                     ` Marc Zyngier
2015-04-01  9:05                     ` Marc Zyngier

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