mbox series

[v2,0/2] ARM: support PHYS_OFFSET minimum aligned at 64KiB boundary

Message ID 20200915131615.3138-1-thunder.leizhen@huawei.com (mailing list archive)
Headers show
Series ARM: support PHYS_OFFSET minimum aligned at 64KiB boundary | expand

Message

Leizhen (ThunderTown) Sept. 15, 2020, 1:16 p.m. UTC 
v1 --> v2:
Nothing changed, but add mail list: patches@armlinux.org.uk

v1:
Currently, only support the kernels where the base of physical memory is
at a 16MiB boundary. Because the add/sub instructions only contains 8bits
unrotated value. But we can use one more "add/sub" instructions to handle
bits 23-16, to support PHYS_OFFSET minimum aligned at 64KiB boundary.

This function is required at least by some Huawei boards, such as Hi1380
board. Becuase the kernel Image is loaded at 2MiB boundary.

Zhen Lei (2):
  ARM: fix trivial comments in head.S
  ARM: support PHYS_OFFSET minimum aligned at 64KiB boundary

 arch/arm/Kconfig              | 18 +++++++++++++++++-
 arch/arm/include/asm/memory.h | 16 +++++++++++++---
 arch/arm/kernel/head.S        | 31 ++++++++++++++++++++++---------
 3 files changed, 52 insertions(+), 13 deletions(-)

Comments

Russell King (Oracle) Sept. 15, 2020, 1:31 p.m. UTC | #1 
On Tue, Sep 15, 2020 at 09:16:13PM +0800, Zhen Lei wrote:
> v1 --> v2:
> Nothing changed, but add mail list: patches@armlinux.org.uk

It isn't a mailing list, it's a bot, and it should only be copied
when you're ready to submit the patches, and only after they've been
reviewed.  It queues the patches for me to eventually apply, so I
don't have to wade through tens of thousands of emails to find (and
likely miss) the appropriate patches.

It also wants to have a KernelVersion: tag somewhere in every patch
email, which has proven to be extremely valuable when applying.

Thanks.