Re: [Qemu-devel] [PULL 2/3] ahci: Force ICC bits in PxCMD to zero

2015-07-21 Thread John Snow
On 07/21/2015 09:02 AM, Peter Maydell wrote: > On 21 July 2015 at 13:55, Eric Blake wrote: >> On 07/21/2015 05:38 AM, Peter Maydell wrote: >>> On 20 July 2015 at 19:29, John Snow wrote: From: Stefan Fritsch The AHCI spec requires that the HBA sets the ICC bits to zero after the

Re: [Qemu-devel] [PULL 2/3] ahci: Force ICC bits in PxCMD to zero

2015-07-21 Thread Peter Maydell
On 21 July 2015 at 13:55, Eric Blake wrote: > On 07/21/2015 05:38 AM, Peter Maydell wrote: >> On 20 July 2015 at 19:29, John Snow wrote: >>> From: Stefan Fritsch >>> >>> The AHCI spec requires that the HBA sets the ICC bits to zero after the >>> ICC change is done. Since we don't do any ICC chan

Re: [Qemu-devel] [PULL 2/3] ahci: Force ICC bits in PxCMD to zero

2015-07-21 Thread Eric Blake
On 07/21/2015 05:38 AM, Peter Maydell wrote: > On 20 July 2015 at 19:29, John Snow wrote: >> From: Stefan Fritsch >> >> The AHCI spec requires that the HBA sets the ICC bits to zero after the >> ICC change is done. Since we don't do any ICC change, force the bits to >> zero all the time. >> >> Th

Re: [Qemu-devel] [PULL 2/3] ahci: Force ICC bits in PxCMD to zero

2015-07-21 Thread Peter Maydell
On 20 July 2015 at 19:29, John Snow wrote: > From: Stefan Fritsch > > The AHCI spec requires that the HBA sets the ICC bits to zero after the > ICC change is done. Since we don't do any ICC change, force the bits to > zero all the time. > > This fixes delays with some OSs (e.g. OpenBSD) waiting f

[Qemu-devel] [PULL 2/3] ahci: Force ICC bits in PxCMD to zero

2015-07-20 Thread John Snow
From: Stefan Fritsch The AHCI spec requires that the HBA sets the ICC bits to zero after the ICC change is done. Since we don't do any ICC change, force the bits to zero all the time. This fixes delays with some OSs (e.g. OpenBSD) waiting for the ICC bits to change to 0. Signed-off-by: Stefan F