RE: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-07-05 Thread Caraman Mihai Claudiu-B02008
: Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int On Mon, 2012-06-25 at 15:26 +0300, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers

RE: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-07-05 Thread Caraman Mihai Claudiu-B02008
: Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int On Mon, 2012-06-25 at 15:26 +0300, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers

Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-06-26 Thread Benjamin Herrenschmidt
On Mon, 2012-06-25 at 15:26 +0300, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest SPRG4-7 registers will be clobbered. For bolted TLB miss exception handlers, which is

Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-06-26 Thread Scott Wood
On 06/25/2012 07:26 AM, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest SPRG4-7 registers will be clobbered. For bolted TLB miss exception handlers, which is the

Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-06-26 Thread Benjamin Herrenschmidt
On Mon, 2012-06-25 at 15:26 +0300, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest SPRG4-7 registers will be clobbered. For bolted TLB miss exception handlers, which is

Re: [RFC PATCH 13/17] PowerPC: booke64: Use SPRG0/3 scratch for bolted TLB miss crit int

2012-06-26 Thread Scott Wood
On 06/25/2012 07:26 AM, Mihai Caraman wrote: Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest SPRG4-7 registers will be clobbered. For bolted TLB miss exception handlers, which is the