From: Geoff Levand <geoff@infradead.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: marc.zyngier@arm.com, Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org, kexec@lists.infradead.org,
christoffer.dall@linaro.org
Subject: Re: [PATCH 0/7] arm64 kexec kernel patches V3
Date: Thu, 02 Oct 2014 15:59:55 -0700 [thread overview]
Message-ID: <1412290795.32313.14.camel@smoke> (raw)
In-Reply-To: <20141002190836.GA26882@redhat.com>
Hi Vivek,
On Thu, 2014-10-02 at 15:08 -0400, Vivek Goyal wrote:
> On Tue, Sep 30, 2014 at 02:27:56PM -0700, Geoff Levand wrote:
> > For a running system you can check the device tree:
> >
> > cat /proc/device-tree/cpus/cpu\@0/enable-method | hexdump -C
> >
>
> So system I have supports spin-table method for cpu bringup. How do I
> test your patches with that system. Are there any patches on your
> spin-table branch which can make it working?
If possible, check if there is a firmware update that supports PSCI.
My spin-table patches are now out of date, and fixing those up is
now low priority.
I modified kexec-tools to only issue a message, but accept a device
tree that does not have the new cpu-return-addr property that is
needed for kexec on spin-table systems. Since the spin-table stuff
is only for managing secondary CPUs, this change should allow you to
test kexec with a 1st stage kernel built with CONFIG_SMP=n.
Since the secondary CPUs will have never left the spin-table, you
should be able to kexec re-boot into an SMP kernel, but you will
not be able to do a successful kexec re-boot from there.
-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 0/7] arm64 kexec kernel patches V3
Date: Thu, 02 Oct 2014 15:59:55 -0700 [thread overview]
Message-ID: <1412290795.32313.14.camel@smoke> (raw)
In-Reply-To: <20141002190836.GA26882@redhat.com>
Hi Vivek,
On Thu, 2014-10-02 at 15:08 -0400, Vivek Goyal wrote:
> On Tue, Sep 30, 2014 at 02:27:56PM -0700, Geoff Levand wrote:
> > For a running system you can check the device tree:
> >
> > cat /proc/device-tree/cpus/cpu\@0/enable-method | hexdump -C
> >
>
> So system I have supports spin-table method for cpu bringup. How do I
> test your patches with that system. Are there any patches on your
> spin-table branch which can make it working?
If possible, check if there is a firmware update that supports PSCI.
My spin-table patches are now out of date, and fixing those up is
now low priority.
I modified kexec-tools to only issue a message, but accept a device
tree that does not have the new cpu-return-addr property that is
needed for kexec on spin-table systems. Since the spin-table stuff
is only for managing secondary CPUs, this change should allow you to
test kexec with a 1st stage kernel built with CONFIG_SMP=n.
Since the secondary CPUs will have never left the spin-table, you
should be able to kexec re-boot into an SMP kernel, but you will
not be able to do a successful kexec re-boot from there.
-Geoff
next prev parent reply other threads:[~2014-10-02 22:59 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 0:23 [PATCH 0/7] arm64 kexec kernel patches V3 Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 2/7] arm64: Convert hcalls to use ISS field Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-10-03 10:51 ` Mark Rutland
2014-10-03 10:51 ` Mark Rutland
2014-10-03 21:56 ` Geoff Levand
2014-10-03 21:56 ` Geoff Levand
2014-10-06 10:13 ` Mark Rutland
2014-10-06 10:13 ` Mark Rutland
2014-09-25 0:23 ` [PATCH 4/7] arm64: Add EL2 switch to soft_restart Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 3/7] arm64: Add new hcall HVC_CALL_FUNC Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 1/7] arm64/kvm: Fix assembler compatibility of macros Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-10-03 10:26 ` Mark Rutland
2014-10-03 10:26 ` Mark Rutland
2014-10-03 22:27 ` Geoff Levand
2014-10-03 22:27 ` Geoff Levand
2014-10-06 10:10 ` Mark Rutland
2014-10-06 10:10 ` Mark Rutland
2014-09-25 0:23 ` [PATCH 7/7] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 6/7] arm64/kexec: Add core kexec support Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-25 18:28 ` Vivek Goyal
2014-09-25 18:28 ` Vivek Goyal
2014-09-25 19:02 ` Geoff Levand
2014-09-25 19:02 ` Geoff Levand
2014-09-25 19:08 ` Vivek Goyal
2014-09-25 19:08 ` Vivek Goyal
2014-09-30 18:18 ` Vivek Goyal
2014-09-30 18:18 ` Vivek Goyal
2014-09-30 19:54 ` Geoff Levand
2014-09-30 19:54 ` Geoff Levand
2014-10-01 14:56 ` Vivek Goyal
2014-10-01 14:56 ` Vivek Goyal
2014-10-03 18:35 ` Geoff Levand
2014-10-03 18:35 ` Geoff Levand
2014-10-07 13:44 ` Vivek Goyal
2014-10-07 13:44 ` Vivek Goyal
2014-10-07 18:42 ` Geoff Levand
2014-10-07 18:42 ` Geoff Levand
2014-10-07 18:45 ` Vivek Goyal
2014-10-07 18:45 ` Vivek Goyal
2014-10-07 20:12 ` Geoff Levand
2014-10-07 20:12 ` Geoff Levand
2014-10-07 20:22 ` Vivek Goyal
2014-10-07 20:22 ` Vivek Goyal
2014-10-09 22:26 ` Geoff Levand
2014-10-09 22:26 ` Geoff Levand
2014-10-23 23:08 ` Geoff Levand
2014-10-23 23:08 ` Geoff Levand
2014-10-08 9:28 ` Mark Rutland
2014-10-08 9:28 ` Mark Rutland
2014-10-07 18:48 ` Vivek Goyal
2014-10-07 18:48 ` Vivek Goyal
2014-10-01 16:16 ` Mark Rutland
2014-10-01 16:16 ` Mark Rutland
2014-10-01 17:36 ` Vivek Goyal
2014-10-01 17:36 ` Vivek Goyal
2014-10-01 17:56 ` Mark Rutland
2014-10-01 17:56 ` Mark Rutland
2014-10-01 17:47 ` Vivek Goyal
2014-10-01 17:47 ` Vivek Goyal
2014-10-01 18:03 ` Mark Rutland
2014-10-01 18:03 ` Mark Rutland
2014-10-01 18:09 ` Vivek Goyal
2014-10-01 18:09 ` Vivek Goyal
2014-10-01 18:19 ` Mark Rutland
2014-10-01 18:19 ` Mark Rutland
2014-10-01 18:31 ` Vivek Goyal
2014-10-01 18:31 ` Vivek Goyal
2014-10-01 19:22 ` Vivek Goyal
2014-10-01 19:22 ` Vivek Goyal
2014-10-02 10:26 ` Mark Rutland
2014-10-02 10:26 ` Mark Rutland
2014-10-02 13:54 ` Vivek Goyal
2014-10-02 13:54 ` Vivek Goyal
2014-10-02 16:53 ` Mark Rutland
2014-10-02 16:53 ` Mark Rutland
2014-09-30 23:59 ` [PATCH V2 " Geoff Levand
2014-09-30 23:59 ` Geoff Levand
2014-09-25 0:23 ` [PATCH 5/7] arm64: Move proc-macros.S to include/asm Geoff Levand
2014-09-25 0:23 ` Geoff Levand
2014-09-30 20:29 ` [PATCH 0/7] arm64 kexec kernel patches V3 Vivek Goyal
2014-09-30 20:29 ` Vivek Goyal
2014-09-30 21:27 ` Geoff Levand
2014-09-30 21:27 ` Geoff Levand
2014-10-02 19:08 ` Vivek Goyal
2014-10-02 19:08 ` Vivek Goyal
2014-10-02 22:59 ` Geoff Levand [this message]
2014-10-02 22:59 ` Geoff Levand
2014-10-07 13:43 ` Vivek Goyal
2014-10-07 13:43 ` Vivek Goyal
2014-10-07 14:06 ` Mark Rutland
2014-10-07 14:06 ` Mark Rutland
2014-10-01 15:19 ` Vivek Goyal
2014-10-01 15:19 ` Vivek Goyal
2014-10-03 21:16 ` Geoff Levand
2014-10-03 21:16 ` Geoff Levand
2014-10-07 13:40 ` Vivek Goyal
2014-10-07 13:40 ` Vivek Goyal
2014-10-07 18:29 ` Geoff Levand
2014-10-07 18:29 ` Geoff Levand
2014-10-08 9:42 ` Mark Rutland
2014-10-08 9:42 ` Mark Rutland
2014-10-09 3:21 ` Dave Young
2014-10-09 3:21 ` Dave Young
2014-10-09 10:09 ` Mark Rutland
2014-10-09 10:09 ` Mark Rutland
2014-10-09 10:19 ` Ard Biesheuvel
2014-10-09 10:19 ` Ard Biesheuvel
2014-10-10 5:30 ` Dave Young
2014-10-10 5:30 ` Dave Young
2014-10-07 15:22 ` Mark Rutland
2014-10-07 15:22 ` Mark Rutland
2014-10-07 18:28 ` Geoff Levand
2014-10-07 18:28 ` Geoff Levand
2014-10-07 18:09 ` Vivek Goyal
2014-10-07 18:09 ` Vivek Goyal
2014-10-07 20:07 ` Geoff Levand
2014-10-07 20:07 ` Geoff Levand
2014-10-08 9:52 ` Leif Lindholm
2014-10-08 9:52 ` Leif Lindholm
2014-10-08 10:07 ` Mark Rutland
2014-10-08 10:07 ` Mark Rutland
2014-10-09 9:22 ` Will Deacon
2014-10-09 9:22 ` Will Deacon
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