From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: efi: make sure vmlinux load address aligned on 2MBytes
Date: Wed, 28 Oct 2015 11:28:39 +0000 [thread overview]
Message-ID: <20151028112839.GA24930@leverpostej> (raw)
In-Reply-To: <56302F42.4040408@codeaurora.org>
On Tue, Oct 27, 2015 at 09:13:22PM -0500, Timur Tabi wrote:
> Ard Biesheuvel wrote:
> >No. I screwed up the patch since the trailing ) should not be there,
> >but we do need to round first, and only then add the offset.
>
> But if the offset is not a multiple of 2MB, won't the address passed
> to allocate_pages be unaligned? I'll test your patch on our system,
> but I thought the problem was that the allocated address must be
> aligned.
The kernel needs to be loaded at an address which is text_offset bytes
past a 2M-aligned base. It is not loaded at the 2M-aligned base itself.
Ard's patch correctly findd a 2M-aligned base, then adds the text
offset.
Mark.
next prev parent reply other threads:[~2015-10-28 11:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-27 21:24 [PATCH] arm64: efi: make sure vmlinux load address aligned on 2MBytes Timur Tabi
2015-10-28 2:06 ` Ard Biesheuvel
2015-10-28 2:10 ` Timur Tabi
2015-10-28 2:11 ` Ard Biesheuvel
2015-10-28 2:13 ` Timur Tabi
2015-10-28 11:28 ` Mark Rutland [this message]
2015-10-28 17:11 ` Timur Tabi
2015-10-28 17:26 ` Mark Rutland
2015-10-28 21:02 ` Timur Tabi
2015-10-27 12:05 ` Mark Rutland
2015-10-28 17:27 ` Will Deacon
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