Re: [PATCH 2 of 3] [KVM] Add DCR access information to struct kvm_run

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

 



On Monday 07 April 2008 20:11:28 David Gibson wrote:
> On Mon, Apr 07, 2008 at 03:53:33PM -0500, Hollis Blanchard wrote:
> > 1 file changed, 7 insertions(+)
> > include/linux/kvm.h |    7 +++++++
> >
> >
> > Device Control Registers are essentially another address space found on
> > PowerPC 4xx processors, analogous to PIO on x86. DCRs are always 32 bits,
> > and are identified by a 32-bit number.
>
> Well... 10-bit, actually.

The mtdcrux description in the ppc440x6 user manual says the following:

	Let the contents of register RA denote a Device Control Register.
	The contents of GPR[RS] are placed into the designated Device Control 
Register.

I take that to mean that we must worry about 32 bits worth of DCR numbers. 
Perhaps I should say "no more than" rather than "always".

-- 
Hollis Blanchard
IBM Linux Technology Center

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
Register now and save $200. Hurry, offer ends at 11:59 p.m., 
Monday, April 7! Use priority code J8TLD2. 
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
kvm-devel mailing list
kvm-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/kvm-devel

[Index of Archives]     [Netdev]     [Ethernet Bridging]     [Linux Virtualization]     [LVS Devel]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]     [Video 4 Linux]

  Powered by Linux