From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/7] ARM: virt: allow the kernel to be entered in HYP mode
Date: Sat, 6 Oct 2012 00:09:08 +0100 [thread overview]
Message-ID: <20121005230908.GC15246@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20121005200822.GQ3874@atomide.com>
On Fri, Oct 05, 2012 at 01:08:22PM -0700, Tony Lindgren wrote:
> Just bisected this down in linux-next for breaking booting of
> my omap2420 ARMv6 based n8x0..
>
> > --- a/arch/arm/kernel/head.S
> > +++ b/arch/arm/kernel/head.S
> > @@ -83,8 +83,12 @@ ENTRY(stext)
> > THUMB( .thumb ) @ switch to Thumb now.
> > THUMB(1: )
> >
> > - setmode PSR_F_BIT | PSR_I_BIT | SVC_MODE, r9 @ ensure svc mode
> > - @ and irqs disabled
> > +#ifdef CONFIG_ARM_VIRT_EXT
> > + bl __hyp_stub_install
> > +#endif
> > + @ ensure svc mode and all interrupts masked
> > + safe_svcmode_maskall r9
> > +
> > mrc p15, 0, r9, c0, c0 @ get processor id
> > bl __lookup_processor_type @ r5=procinfo r9=cpuid
> > movs r10, r5 @ invalid processor (r5=0)?
>
> ..and looks like undoing this part fixes it. Any ideas?
>
> I quickly tried disabling ARCH_OMAP3 and ARCH_OMAP4 so it's
> ARMv6 but that does not help.
You really should Cc me when you hit something like this. I was
thinking about sending my tree (which contains these changes) this
evening but if they're breaking stuff, I'd prefer to delay that
stuff at least for a while.
next prev parent reply other threads:[~2012-10-05 23:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 16:55 [PATCH v2 0/7] Allow the kernel to be booted in HYP mode Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 1/7] ARM: opcodes: add __ERET/__MSR_ELR_HYP instruction encoding Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 2/7] ARM: virt: allow the kernel to be entered in HYP mode Marc Zyngier
2012-10-05 20:08 ` Tony Lindgren
2012-10-05 23:09 ` Russell King - ARM Linux [this message]
2012-10-05 23:23 ` Tony Lindgren
2012-10-05 23:50 ` Tony Lindgren
2012-10-06 1:32 ` Nicolas Pitre
2012-10-06 3:06 ` Tony Lindgren
2012-10-06 10:18 ` Marc Zyngier
2012-10-06 14:06 ` Nicolas Pitre
2012-10-06 14:44 ` Tony Lindgren
2012-10-06 14:47 ` Marc Zyngier
2012-10-06 14:42 ` Tony Lindgren
2012-10-06 15:32 ` Nicolas Pitre
2012-10-06 15:40 ` Tony Lindgren
2012-10-06 16:06 ` Marc Zyngier
2012-10-06 15:42 ` Russell King - ARM Linux
2012-10-06 16:00 ` Tony Lindgren
2012-10-08 11:01 ` Dave Martin
2012-10-08 11:33 ` Marc Zyngier
2012-10-08 20:36 ` Tony Lindgren
2012-10-08 11:33 ` Dave Martin
2012-09-07 16:55 ` [PATCH v2 3/7] ARM: zImage/virt: hyp mode entry support for the zImage loader Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 4/7] ARM: virt: Update documentation for hyp mode entry support Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 5/7] ARM: virt: Add boot-time diagnostics Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 6/7] ARM: virt: Add CONFIG_ARM_VIRT_EXT option Marc Zyngier
2012-09-07 16:55 ` [PATCH v2 7/7] ARM: virt: arch_timers: enable access to physical timers Marc Zyngier
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