From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: bug in identity map for 4KB pages?
Date: Wed, 29 Jul 2015 13:32:12 +0100 [thread overview]
Message-ID: <20150729123212.GM15213@leverpostej> (raw)
In-Reply-To: <CAKv+Gu8uOO52xt+VX7YR5YHCN-Tan7mBRpR-xCJD33eE=vJcSA@mail.gmail.com>
> (replying to self) but actually, either solution still means that, of
> the ~16 GB this platform seems to have installed, only 2 GB is made
> available.
>
> I suppose there is little we can do about it, since we cannot ignore
> the lower 2GB if the kernel resides there ...
Yup.
We need to cap memory for the general case anyway (e.g. 48 bits worth of
contiguous memory when the kernel only supports 39), and changes to
spasemem behaviour are orthogonal to that.
Mark.
next prev parent reply other threads:[~2015-07-29 12:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-29 2:37 bug in identity map for 4KB pages? Stuart Yoder
2015-07-29 7:47 ` Ard Biesheuvel
2015-07-29 11:42 ` Mark Rutland
2015-07-29 11:49 ` Ard Biesheuvel
2015-07-29 11:58 ` Ard Biesheuvel
2015-07-29 12:30 ` Will Deacon
2015-07-29 12:36 ` Mark Rutland
2015-07-29 12:32 ` Mark Rutland [this message]
2015-07-29 12:53 ` Mark Rutland
2015-07-29 12:57 ` Ard Biesheuvel
2015-07-29 13:24 ` Mark Rutland
2015-07-29 15:45 ` Stuart Yoder
2015-07-29 15:48 ` Ard Biesheuvel
2015-07-29 15:58 ` Stuart Yoder
2015-07-29 16:12 ` Ard Biesheuvel
2015-07-29 18:40 ` Ard Biesheuvel
2015-07-29 19:19 ` Stuart Yoder
2015-07-29 19:19 ` Stuart Yoder
2015-07-29 20:37 ` Ard Biesheuvel
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