linux-kernel - Re: [PATCH v6 14/19] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

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Message-ID: <3415450.VSgEm2gPbU@wuerfel>
Date:	Thu, 03 Dec 2015 21:42:20 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Yury Norov <ynorov@...iumnetworks.com>,
	Catalin Marinas <catalin.marinas@....com>, pinskia@...il.com,
	Prasun.Kapoor@...iumnetworks.com, schwab@...e.de,
	Nathan_Lynch@...tor.com, agraf@...e.de,
	linux-kernel@...r.kernel.org, klimov.linux@...il.com,
	broonie@...nel.org, jan.dakinevich@...il.com,
	ddaney.cavm@...il.com, bamvor.zhangjian@...wei.com,
	philipp.tomsich@...obroma-systems.com, andrey.konovalov@...aro.org,
	joseph@...esourcery.com, christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH v6 14/19] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

On Thursday 03 December 2015 21:14:41 Yury Norov wrote:
> 
> > I'm not sure there is much value in
> > keeping 4*PAGE_SIZE for larger page sizes but I agree that the current
> > 16K value doesn't work well with 64K pages.
> 
> Arnd told there will be a workaround for arm v6 caches. Than this
> header will not be needed at all. Until that, this is simpliest
> fix as it doesn't affect userspace.

I think we should do whatever matches user space: There is no harm
in going to 256KB instead of 64KB if current glibc already uses
4*getpagetsize() for a kernel with native 64K pages.

	Arnd
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