On 01.07.14 13:13, reza.jel...@tuhh.de wrote:
From: Reza Jelveh <reza.jel...@tuhh.de>

The data byte count(DBC) read from the description information is defined for
bits 21:00. Bits 30:22 are reserved and bit 31 is the Interrupt on Completion
(I) flag.

Completion interrupts are triggered after every transaction instead of on
I-flag in QEMU. tbl_entry_size is a signed integer and improperly reading the
DBC leads to a negative offset that causes sglist allocation to fail.

Signed-off-by: Reza Jelveh <reza.jel...@tuhh.de>
---
This requires a custom ovmf image with sata controller for testing:

http://reza.jelveh.me/assets/OVMF.fd.bz2

Signed-off-by: Reza Jelveh <reza.jel...@tuhh.de>

Reviewed-by: Alexander Graf <ag...@suse.de>

I'm still puzzled that this ever worked at all ;).


Alex


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