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From: Will Deacon <will@kernel.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: elver@google.com, paulmck@kernel.org, peterz@infradead.org,
	catalin.marinas@arm.com, james.morse@arm.com,
	linux-arm-kernel@lists.infradead.org, dvyukov@google.com
Subject: Re: [PATCH 10/11] arm64: entry: fix NMI {user,kernel}->kernel transitions
Date: Thu, 26 Nov 2020 21:00:33 +0000	[thread overview]
Message-ID: <20201126210033.GA19126@willie-the-truck> (raw)
In-Reply-To: <20201126184159.GG38486@C02TD0UTHF1T.local>

On Thu, Nov 26, 2020 at 06:41:59PM +0000, Mark Rutland wrote:
> On Thu, Nov 26, 2020 at 12:36:01PM +0000, Mark Rutland wrote:
> > diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h
> > index d579b2e6db7a..0756191f44f6 100644
> > --- a/arch/arm64/include/asm/exception.h
> > +++ b/arch/arm64/include/asm/exception.h
> 
> > +void arm64_enter_nmi(struct pt_regs *regs);
> > +void arm64_exit_nmi(struct pt_regs *regs);
> 
> [...]
> 
> > -asmlinkage __kprobes notrace unsigned long
> > +asmlinkage noinstr unsigned long
> >  __sdei_handler(struct pt_regs *regs, struct sdei_registered_event *arg)
> >  {
> >  	unsigned long ret;
> >  
> > -	nmi_enter();
> > +	arm64_enter_nmi();
> >  
> >  	ret = _sdei_handler(regs, arg);
> >  
> > -	nmi_exit();
> > +	arm64_exit_nmi();
> >  
> >  	return ret;
> >  }
> 
> Whoops; I forgot to pass the regs here.
> 
> Will, could you please apply the fixup patch below? I've build+boot
> tested with the CKI config atop rc5, and made sure I hadn't done
> likewise in any of the other callers.

Cheers, I've pushed that on top. Let's see how far we get this time...

Will

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  reply	other threads:[~2020-11-26 21:02 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-26 12:35 [PATCH 00/11] arm64: entry lockdep/rcu/tracing fixes Mark Rutland
2020-11-26 12:35 ` [PATCH 01/11] arm64: syscall: exit userspace before unmasking exceptions Mark Rutland
2020-11-26 12:35 ` [PATCH 02/11] arm64: mark idle code as noinstr Mark Rutland
2020-11-26 12:35 ` [PATCH 03/11] arm64: entry: mark entry " Mark Rutland
2020-11-26 12:35 ` [PATCH 04/11] arm64: entry: move enter_from_user_mode to entry-common.c Mark Rutland
2020-11-26 12:35 ` [PATCH 05/11] arm64: entry: prepare ret_to_user for function call Mark Rutland
2020-11-26 12:35 ` [PATCH 06/11] arm64: entry: move el1 irq/nmi logic to C Mark Rutland
2020-11-26 12:35 ` [PATCH 07/11] arm64: entry: fix non-NMI user<->kernel transitions Mark Rutland
2020-11-30 11:22   ` Will Deacon
2020-11-26 12:35 ` [PATCH 08/11] arm64: ptrace: prepare for EL1 irq/rcu tracking Mark Rutland
2020-11-30 11:01   ` Will Deacon
2020-11-26 12:36 ` [PATCH 09/11] arm64: entry: fix non-NMI kernel<->kernel transitions Mark Rutland
2020-11-30 11:22   ` Will Deacon
2020-11-26 12:36 ` [PATCH 10/11] arm64: entry: fix NMI {user, kernel}->kernel transitions Mark Rutland
2020-11-26 18:41   ` [PATCH 10/11] arm64: entry: fix NMI {user,kernel}->kernel transitions Mark Rutland
2020-11-26 21:00     ` Will Deacon [this message]
2020-11-26 12:36 ` [PATCH 11/11] arm64: entry: fix EL1 debug transitions Mark Rutland
2020-11-30 11:23 ` [PATCH 00/11] arm64: entry lockdep/rcu/tracing fixes Will Deacon
2020-11-30 12:03 ` Marco Elver
2020-11-30 12:38   ` Mark Rutland
     [not found]     ` <20201130133245.GA1307615@elver.google.com>
2020-11-30 16:54       ` Mark Rutland

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