Re: [PATCH 3/7] asm-generic/io.h: make ioread64 and iowrite64 universally available

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 6/22/2017 2:36 PM, Alan Cox wrote:
I think that makes sense for the platforms with that problem. I'm not
sure there are many that can't do it for mmio at least. 486SX can't do it
and I guess some ARM32 but I think almost everyone else can including
most 32bit x86.

What's more of a problem is a lot of platforms can do 64bit MMIO via
ioread/write64 but not 64bit port I/O, and it's not clear how you
represent that via an ioread/write API that abstracts it away.

In Patch 2, we call bad_io_access for anyone trying to do 64bit accesses on port I/O.

Logan

--
To unsubscribe from this list: send the line "unsubscribe linux-alpha" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Netdev]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux