Re: [Qemu-devel] [PATCH 1/6] ahci: Correct PIO/D2H FIS responses

2014-10-27 Thread Markus Armbruster
John Snow writes: > On 10/27/2014 05:32 AM, Markus Armbruster wrote: >> John Snow writes: >> >>> Currently, the D2H FIS packets AHCI generates simply parrot back >>> the LBA that the guest sent to us in the cmd_fis. However, some >>> commands (like READ NATIVE MAX) modify the LBA registers as a

Re: [Qemu-devel] [PATCH 1/6] ahci: Correct PIO/D2H FIS responses

2014-10-27 Thread John Snow
On 10/27/2014 05:32 AM, Markus Armbruster wrote: John Snow writes: Currently, the D2H FIS packets AHCI generates simply parrot back the LBA that the guest sent to us in the cmd_fis. However, some commands (like READ NATIVE MAX) modify the LBA registers as a return value, through which the AH

Re: [Qemu-devel] [PATCH 1/6] ahci: Correct PIO/D2H FIS responses

2014-10-27 Thread Markus Armbruster
John Snow writes: > Currently, the D2H FIS packets AHCI generates simply parrot back > the LBA that the guest sent to us in the cmd_fis. However, some > commands (like READ NATIVE MAX) modify the LBA registers as a > return value, through which the AHCI D2H FIS is the only response > mechanism. T

[Qemu-devel] [PATCH 1/6] ahci: Correct PIO/D2H FIS responses

2014-10-01 Thread John Snow
Currently, the D2H FIS packets AHCI generates simply parrot back the LBA that the guest sent to us in the cmd_fis. However, some commands (like READ NATIVE MAX) modify the LBA registers as a return value, through which the AHCI D2H FIS is the only response mechanism. Thus, the D2H response should u