From: joel.schopp@amd.com (Joel Schopp)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 07/11] arm64: mm: Implement 4 levels of translation tables
Date: Tue, 29 Jul 2014 09:19:38 -0500 [thread overview]
Message-ID: <53D7AD7A.8050706@amd.com> (raw)
In-Reply-To: <ACF42928-55EE-4466-B217-982839BB98C4@gmail.com>
>> Here's a good example of where we run into trouble equating page table
>> addressable bits with hardware addressable bits. If VA_BITS is 48 due
>> to 4K 4 level page tables but is running on a 42 bit system this will
>> end up being out of range.
> Is your concern that CPU issues 48-bit address to MMU on 42-bit hardware?
> Have you tested this patch series on your hardware?
>
> - Jungseok Lee
That is my concern. I did test the patch on my hardware with the
following results:
64k pages, 2 levels 42 bit VA - worked (no regression)
64k pages, 3 levels 48 bit VA- didn't boot
4k pages, 4 levels 42 bit VA - didn't boot
4k pages, 4 levels 48 bit VA - didn't boot
next prev parent reply other threads:[~2014-07-29 14:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAGoO6fLT6B_vx+Wtm6bKHD6YkjQcM8f=deD7SDP3BR_uC+1c5w@mail.gmail.com>
2014-07-29 13:47 ` [PATCH v7 07/11] arm64: mm: Implement 4 levels of translation tables Jungseok Lee
2014-07-29 14:19 ` Joel Schopp [this message]
2014-07-30 14:57 ` Jungseok Lee
2014-08-14 11:42 ` Ganapatrao Kulkarni
2014-08-14 12:58 ` Catalin Marinas
2014-08-14 13:47 ` Ganapatrao Kulkarni
[not found] <2211E520-32A4-435C-9F63-A7EFEE8B677A@gmail.com>
2014-07-17 15:04 ` Jungseok Lee
2014-07-17 16:47 ` Catalin Marinas
2014-07-16 19:09 [PATCH v7 00/11] arm64: Support " Catalin Marinas
2014-07-16 19:09 ` [PATCH v7 07/11] arm64: mm: Implement " Catalin Marinas
2014-07-28 15:40 ` Joel Schopp
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53D7AD7A.8050706@amd.com \
--to=joel.schopp@amd.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.