From: Geoff Levand <geoff@infradead.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <Marc.Zyngier@arm.com>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Will Deacon <Will.Deacon@arm.com>,
"christoffer.dall@linaro.org" <christoffer.dall@linaro.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
"kexec@lists.infradead.org" <kexec@lists.infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 04/10] arm64: Add EL2 switch to soft_restart
Date: Fri, 31 Oct 2014 16:47:52 -0700 [thread overview]
Message-ID: <1414799272.23621.50.camel@smoke> (raw)
In-Reply-To: <20141024105724.GF24265@leverpostej>
On Fri, 2014-10-24 at 11:57 +0100, Mark Rutland wrote:
> On Fri, Oct 24, 2014 at 12:10:58AM +0100, Geoff Levand wrote:
> > When a CPU is reset it needs to be put into the exception level it had when it
> > entered the kernel. Update cpu_reset() to accept an argument el2_switch which
> > signals cpu_reset() to enter the soft reset address at EL2. If el2_switch is
> > not set the soft reset address will be entered at EL1.
> >
> > Update cpu_soft_restart() and soft_restart() to pass the return of
> > is_hyp_mode_available() as the el2_switch value to cpu_reset(). Also update the
> > comments of cpu_reset(), cpu_soft_restart() and soft_restart() to reflect this
> > change.
>
> This will blow up without warning with KVM, and I think we need to
> address that first.
Yes. I think we can just put in a conditional on KVM as a workaround
until KVM will work with this.
-Geoff
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WARNING: multiple messages have this Message-ID (diff)
From: geoff@infradead.org (Geoff Levand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/10] arm64: Add EL2 switch to soft_restart
Date: Fri, 31 Oct 2014 16:47:52 -0700 [thread overview]
Message-ID: <1414799272.23621.50.camel@smoke> (raw)
In-Reply-To: <20141024105724.GF24265@leverpostej>
On Fri, 2014-10-24 at 11:57 +0100, Mark Rutland wrote:
> On Fri, Oct 24, 2014 at 12:10:58AM +0100, Geoff Levand wrote:
> > When a CPU is reset it needs to be put into the exception level it had when it
> > entered the kernel. Update cpu_reset() to accept an argument el2_switch which
> > signals cpu_reset() to enter the soft reset address at EL2. If el2_switch is
> > not set the soft reset address will be entered at EL1.
> >
> > Update cpu_soft_restart() and soft_restart() to pass the return of
> > is_hyp_mode_available() as the el2_switch value to cpu_reset(). Also update the
> > comments of cpu_reset(), cpu_soft_restart() and soft_restart() to reflect this
> > change.
>
> This will blow up without warning with KVM, and I think we need to
> address that first.
Yes. I think we can just put in a conditional on KVM as a workaround
until KVM will work with this.
-Geoff
next prev parent reply other threads:[~2014-10-31 23:47 UTC|newest]
Thread overview: 141+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-23 23:10 [PATCH 00/10] arm64 kexec kernel patches V5 Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 01/10] arm64/kvm: Fix assembler compatibility of macros Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 9:24 ` Mark Rutland
2014-10-24 9:24 ` Mark Rutland
2014-10-27 12:13 ` Will Deacon
2014-10-27 12:13 ` Will Deacon
2014-10-27 12:45 ` Christoffer Dall
2014-10-27 12:45 ` Christoffer Dall
2014-10-31 23:06 ` [PATCH V2 " Geoff Levand
2014-10-31 23:06 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 04/10] arm64: Add EL2 switch to soft_restart Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 10:57 ` Mark Rutland
2014-10-24 10:57 ` Mark Rutland
2014-10-31 23:47 ` Geoff Levand [this message]
2014-10-31 23:47 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 07/10] arm64: Move proc-macros.S to include/asm Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 06/10] arm64: Update booting.txt to reserved-memory nodes Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 10:54 ` Mark Rutland
2014-10-24 10:54 ` Mark Rutland
2014-10-24 11:04 ` Grant Likely
2014-10-24 11:04 ` Grant Likely
2014-10-24 12:18 ` Mark Rutland
2014-10-24 12:18 ` Mark Rutland
2014-10-24 13:54 ` Grant Likely
2014-10-24 13:54 ` Grant Likely
2014-10-24 14:10 ` Mark Rutland
2014-10-24 14:10 ` Mark Rutland
2014-10-24 14:47 ` Grant Likely
2014-10-24 14:47 ` Grant Likely
2014-10-23 23:10 ` [PATCH 02/10] arm64: Convert hcalls to use ISS field Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 05/10] arm64: Convert dts to use reserved-memory nodes Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 10:51 ` Mark Rutland
2014-10-24 10:51 ` Mark Rutland
2014-10-24 10:59 ` Grant Likely
2014-10-24 10:59 ` Grant Likely
2014-10-24 12:27 ` Mark Rutland
2014-10-24 12:27 ` Mark Rutland
2014-10-24 14:45 ` Grant Likely
2014-10-24 14:45 ` Grant Likely
2014-10-31 23:44 ` Geoff Levand
2014-10-31 23:44 ` Geoff Levand
2014-11-03 20:02 ` Mark Rutland
2014-11-03 20:02 ` Mark Rutland
2014-11-03 22:26 ` Rob Herring
2014-11-03 22:26 ` Rob Herring
2014-11-04 11:35 ` Mark Rutland
2014-11-04 11:35 ` Mark Rutland
2014-11-04 11:37 ` Grant Likely
2014-11-04 11:37 ` Grant Likely
2014-10-23 23:10 ` [PATCH 08/10] arm64/kexec: Add core kexec support Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 10:28 ` Mark Rutland
2014-10-24 10:28 ` Mark Rutland
2014-11-13 2:19 ` Geoff Levand
2014-11-13 2:19 ` Geoff Levand
2014-11-17 16:38 ` Mark Rutland
2014-11-17 16:38 ` Mark Rutland
2014-11-17 20:20 ` Geoff Levand
2014-11-17 20:20 ` Geoff Levand
2014-11-07 11:01 ` Arun Chandran
2014-11-07 11:01 ` Arun Chandran
2014-11-12 21:54 ` Geoff Levand
2014-11-13 9:52 ` Arun Chandran
2014-11-17 3:52 ` Dave Young
2014-10-23 23:10 ` [PATCH 03/10] arm64: Add new hcall HVC_CALL_FUNC Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 10/10] arm64/kexec: Add pr_devel output Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-23 23:10 ` [PATCH 09/10] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2014-10-23 23:10 ` Geoff Levand
2014-10-24 10:31 ` Mark Rutland
2014-10-24 10:31 ` Mark Rutland
2014-10-31 23:50 ` Geoff Levand
2014-10-31 23:50 ` Geoff Levand
2014-11-03 20:05 ` Mark Rutland
2014-11-03 20:05 ` Mark Rutland
2014-11-04 1:49 ` Geoff Levand
2014-11-04 1:49 ` Geoff Levand
2014-10-31 7:52 ` [PATCH 00/10] arm64 kexec kernel patches V5 Dave Young
2014-10-31 7:52 ` Dave Young
2014-10-31 23:25 ` Geoff Levand
2014-10-31 23:25 ` Geoff Levand
2014-11-06 2:01 ` Dave Young
2014-11-06 2:01 ` Dave Young
2014-11-13 8:37 ` Dave Young
2014-11-13 8:37 ` Dave Young
2014-11-13 23:50 ` Geoff Levand
2014-11-13 23:50 ` Geoff Levand
2014-11-17 3:49 ` Dave Young
2014-11-17 3:49 ` Dave Young
2014-11-03 19:46 ` Mark Rutland
2014-11-03 19:46 ` Mark Rutland
2014-11-06 1:56 ` Dave Young
2014-11-06 1:56 ` Dave Young
2014-11-06 15:08 ` Mark Rutland
2014-11-06 15:08 ` Mark Rutland
2014-11-07 0:41 ` Grant Likely
2014-11-07 0:41 ` Grant Likely
2014-11-07 10:16 ` Mark Rutland
2014-11-07 10:16 ` Mark Rutland
2014-11-07 10:41 ` Ard Biesheuvel
2014-11-07 10:41 ` Ard Biesheuvel
2014-11-07 10:45 ` Ard Biesheuvel
2014-11-07 10:45 ` Ard Biesheuvel
2014-11-07 10:46 ` Ard Biesheuvel
2014-11-07 10:46 ` Ard Biesheuvel
2014-11-07 11:35 ` Mark Rutland
2014-11-07 11:35 ` Mark Rutland
2014-11-07 11:42 ` Ard Biesheuvel
2014-11-07 11:42 ` Ard Biesheuvel
2014-11-07 22:34 ` Grant Likely
2014-11-07 22:34 ` Grant Likely
2014-11-06 12:16 ` Arun Chandran
2014-11-06 12:16 ` Arun Chandran
2014-11-06 15:28 ` Mark Rutland
2014-11-06 15:28 ` Mark Rutland
2014-11-06 16:13 ` Arun Chandran
2014-11-06 16:13 ` Arun Chandran
2014-11-06 18:25 ` Geoff Levand
2014-11-06 18:25 ` Geoff Levand
2014-11-07 6:26 ` Arun Chandran
2014-11-07 6:26 ` Arun Chandran
2014-11-06 18:39 ` Mark Rutland
2014-11-06 18:39 ` Mark Rutland
2014-11-07 6:36 ` Arun Chandran
2014-11-07 6:36 ` Arun Chandran
2014-11-10 7:17 ` Dave Young
2014-11-10 7:17 ` Dave Young
2014-11-10 8:35 ` Arun Chandran
2014-11-10 8:35 ` Arun Chandran
2014-11-10 9:24 ` Dave Young
2014-11-10 9:24 ` Dave Young
2014-11-12 9:56 ` Dave Young
2014-11-12 9:56 ` Dave Young
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