From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/4] arm64: move kernel text below PAGE_OFFSET
Date: Wed, 25 Mar 2015 14:10:29 +0000 [thread overview]
Message-ID: <20150325141029.GC26903@localhost> (raw)
In-Reply-To: <1427125016-3873-4-git-send-email-ard.biesheuvel@linaro.org>
On Mon, Mar 23, 2015 at 04:36:55PM +0100, Ard Biesheuvel wrote:
> This moves the virtual mapping of the kernel Image down into
> the lower half of the kernel virtual memory range, moving it
> out of the linear mapping.
I wonder whether there would be better code generation with the kernel
address very high, like the top 64MB. Anyway, having it higher allows us
to check some top bits of the address and detect whether it's kernel
text or linear mapping.
--
Catalin
next prev parent reply other threads:[~2015-03-25 14:10 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 15:23 [RFC PATCH 0/3] arm64: relocatable kernel proof of concept Ard Biesheuvel
2015-03-16 15:23 ` [RFC PATCH 1/3] arm64: head.S: replace early literals with constant immediates Ard Biesheuvel
2015-03-16 17:14 ` Mark Rutland
2015-03-17 7:01 ` Ard Biesheuvel
2015-03-16 15:23 ` [RFC PATCH 2/3] arm64: add support for relocatable kernel Ard Biesheuvel
2015-03-16 15:23 ` [RFC PATCH 3/3] arm64/efi: use relocated kernel Ard Biesheuvel
2015-03-16 16:09 ` [RFC PATCH 0/3] arm64: relocatable kernel proof of concept Mark Rutland
2015-03-16 16:45 ` Ard Biesheuvel
2015-03-16 17:33 ` Mark Rutland
2015-03-16 17:43 ` Ard Biesheuvel
2015-03-17 16:20 ` Mark Rutland
2015-03-16 23:19 ` Kees Cook
2015-03-17 7:38 ` Ard Biesheuvel
2015-03-17 16:35 ` Mark Rutland
2015-03-17 16:40 ` Ard Biesheuvel
2015-03-17 16:43 ` Mark Rutland
2015-03-23 15:36 ` [PATCH 0/4] RFC: split text and linear mappings using tagged pointers Ard Biesheuvel
2015-03-23 15:36 ` [PATCH 1/4] arm64: use tagged pointers to distinguish kernel text from the linear mapping Ard Biesheuvel
2015-03-25 14:04 ` Catalin Marinas
2015-03-26 1:27 ` Mark Rutland
2015-03-23 15:36 ` [PATCH 2/4] arm64: fixmap: move translation tables to dedicated region Ard Biesheuvel
2015-03-26 1:28 ` Mark Rutland
2015-03-26 6:20 ` Ard Biesheuvel
2015-03-30 14:34 ` Mark Rutland
2015-03-23 15:36 ` [PATCH 3/4] arm64: move kernel text below PAGE_OFFSET Ard Biesheuvel
2015-03-25 14:10 ` Catalin Marinas [this message]
2015-03-23 15:36 ` [PATCH 4/4] arm64: align PHYS_OFFSET to block size Ard Biesheuvel
2015-03-25 14:14 ` Catalin Marinas
2015-03-26 6:23 ` Ard Biesheuvel
2015-03-25 14:59 ` Catalin Marinas
2015-03-26 6:22 ` Ard Biesheuvel
2015-03-27 13:16 ` Ard Biesheuvel
2015-03-30 13:49 ` Catalin Marinas
2015-03-30 14:00 ` Ard Biesheuvel
2015-03-30 14:55 ` Mark Rutland
2015-03-30 15:00 ` Catalin Marinas
2015-03-30 18:08 ` Ard Biesheuvel
2015-03-31 14:49 ` Catalin Marinas
2015-03-31 16:19 ` Catalin Marinas
2015-03-31 16:46 ` Catalin Marinas
2015-03-26 1:26 ` [PATCH 0/4] RFC: split text and linear mappings using tagged pointers Mark Rutland
2015-03-26 6:09 ` Ard Biesheuvel
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