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From: Richard Henderson <richard.henderson@linaro.org>
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Date: Sat, 3 Mar 2018 06:09:43 -0800
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Subject: Re: [Qemu-devel] [PATCH 10/10] linux-user: init_guest_space: Try to
 make ARM space+commpage continuous
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To: Peter Maydell <peter.maydell@linaro.org>, Luke Shumaker <lukeshu@lukeshu.com>
Cc: Luke Shumaker <lukeshu@parabola.nu>, Riku Voipio <riku.voipio@iki.fi>, Laurent Vivier <laurent@vivier.eu>, QEMU Developers <qemu-devel@nongnu.org>, Paul Brook <paul@codesourcery.com>

On 03/02/2018 06:13 AM, Peter Maydell wrote:
> Does anybody know why we allow the user to specify
> it on the command line? (git revision history doesn't help, it just says
> there's been a -pagesize argument since commit 54936004fddc5 in 2003,
> right back when mmap emulation was first added...)

I *think* it is to allow two different hosts with different page sizes to
achieve the same memory layout, so that tcg traces are more easily compared, to
root out bugs in the second host's tcg backend.

That's the only thing that I've used it for, anyway.


r~