[Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-17 Thread Blue Swirl
On 5/17/10, Paolo Bonzini wrote: > > > > In 2/2, A20 logic changes a bit but I doubt any guest would be broken > > > > if A20 line written through I/O port 92 couldn't be read via i8042. > > > > The reverse (write using i8042 and read port 92) will work. > > > > > > > > > > Why take the risk

[Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-17 Thread Paolo Bonzini
> > > In 2/2, A20 logic changes a bit but I doubt any guest would be broken > > > if A20 line written through I/O port 92 couldn't be read via i8042. > > > The reverse (write using i8042 and read port 92) will work. > > > > > > > Why take the risk? > > The alternative is to route a signal from po

Re: [Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-16 Thread Blue Swirl
On 5/16/10, Jamie Lokier wrote: > Blue Swirl wrote: > > On 5/16/10, Paolo Bonzini wrote: > > > On 05/15/2010 11:49 AM, Blue Swirl wrote: > > > > > > > In 2/2, A20 logic changes a bit but I doubt any guest would be broken > > > > if A20 line written through I/O port 92 couldn't be read via i8

Re: [Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-16 Thread Jamie Lokier
Blue Swirl wrote: > On 5/16/10, Paolo Bonzini wrote: > > On 05/15/2010 11:49 AM, Blue Swirl wrote: > > > > > In 2/2, A20 logic changes a bit but I doubt any guest would be broken > > > if A20 line written through I/O port 92 couldn't be read via i8042. > > > The reverse (write using i8042 and read

[Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-16 Thread Blue Swirl
On 5/16/10, Paolo Bonzini wrote: > On 05/15/2010 11:49 AM, Blue Swirl wrote: > > > In 2/2, A20 logic changes a bit but I doubt any guest would be broken > > if A20 line written through I/O port 92 couldn't be read via i8042. > > The reverse (write using i8042 and read port 92) will work. > > > >

[Qemu-devel] Re: [PATCH 0/2] pckbd improvements

2010-05-16 Thread Paolo Bonzini
On 05/15/2010 11:49 AM, Blue Swirl wrote: In 2/2, A20 logic changes a bit but I doubt any guest would be broken if A20 line written through I/O port 92 couldn't be read via i8042. The reverse (write using i8042 and read port 92) will work. Why take the risk? PaolO