linux-kernel - Re: bisected: [PATCH V4] x86/apic: Always explicitly disarm TSC-deadline timer

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Message-ID: <20241130114549.GI10431@google.com>
Date: Sat, 30 Nov 2024 20:45:49 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: 20241015061522.25288-1-rui.zhang@...el.com,
	Zhang Rui <rui.zhang@...el.com>, hpa@...or.com,
	peterz@...radead.org, thorsten.blum@...lux.com,
	yuntao.wang@...ux.dev, tony.luck@...el.com, len.brown@...el.com,
	srinivas.pandruvada@...el.com, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, mingo@...hat.com, bp@...en8.de,
	dave.hansen@...ux.intel.com, rafael.j.wysocki@...el.com,
	x86@...nel.org, linux-pm@...r.kernel.org,
	Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: Re: bisected: [PATCH V4] x86/apic: Always explicitly disarm
 TSC-deadline timer

On (24/11/30 12:21), Thomas Gleixner wrote:
> > WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference from the (unknown reference) (unknown) to the (unknown reference) .irqentry.text:(unknown)
> > The relocation at __ex_table+0x447c references
> > section ".irqentry.text" which is not in the list of
> > authorized sections.
> >
> > WARNING: vmlinux.o(__ex_table+0x4480): Section mismatch in reference from the (unknown reference) (unknown) to the (unknown reference) .irqentry.text:(unknown)
> > The relocation at __ex_table+0x4480 references
> > section ".irqentry.text" which is not in the list of
> > authorized sections.
> >
> > FATAL: modpost: Section mismatches detected.
> >
> > Specifically because of wrmsrl.
> >
> > I'm aware of the section mismatch errors on linux-5.4 (I know), not
> > aware of any other stable versions (but I haven't checked).  Is this
> > something specific to linux-5.4?
> 
> So it seems the compiler inlines the inner guts of
> sysvec_apic_timer_interrupt() and local_apic_timer_interrupt().
> 
> Can you try the patch below?

That works, as far as I can tell, thank you!