linux-kernel - RE: [PATCH 6/6] arm64: switch to relative exception tables

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Message-ID: <3908561D78D1C84285E8C5FCA982C28F39FA127B@ORSMSX114.amr.corp.intel.com>
Date:	Mon, 4 Jan 2016 18:20:50 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"H. Peter Anvin" <hpa@...or.com>,
	Will Deacon <will.deacon@....com>,
	"Ard Biesheuvel" <ard.biesheuvel@...aro.org>
CC:	"linux-alpha@...r.kernel.org" <linux-alpha@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"heiko.carstens@...ibm.com" <heiko.carstens@...ibm.com>,
	"schwidefsky@...ibm.com" <schwidefsky@...ibm.com>,
	"mattst88@...il.com" <mattst88@...il.com>,
	"ink@...assic.park.msu.ru" <ink@...assic.park.msu.ru>,
	"rth@...ddle.net" <rth@...ddle.net>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"arnd@...db.de" <arnd@...db.de>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"marc.zyngier@....com" <marc.zyngier@....com>
Subject: RE: [PATCH 6/6] arm64: switch to relative exception tables

> May I humbly ask why the [Finnish] you don't use the equivalent of the
> x86 _ASM_EXTABLE() macro?  In fact, why don't we make that one generic, too?

I'm messing with that right now (with help from Andy Lutomirski and Boris) to
add different classes of exception table (so I can tag some instructions as being
suitable for fixup from the machine check handler).  So it might not be generic
for much longer.

http://marc.info/?l=linux-kernel&m=145187079504846&w=2

-Tony