Hello i just compiled succesfully the 2.6.4 stable kernel for my home pc. After exploring a bit and having booted with the new kernel i tried to activate the DMA for my hard disk using hdparm -d1 /dev/hdd and it gave me back the followin error:
/dev/hdd:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)

Also the lspci output is the following:
00:00.0 Host bridge: Silicon Integrated Systems [SiS] SiS645DX Host & Memory & AGP Controller
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS 530 Virtual PCI-to-PCI bridge (AGP)
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS962 [MuTIOL Media IO] (rev 04)
00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE]
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 PCI Audio Accelerator (rev a0)
00:03.0 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f)
00:03.1 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f)
00:03.2 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f)
00:03.3 USB Controller: Silicon Integrated Systems [SiS] SiS7002 USB 2.0
00:0a.0 Ethernet controller: 3Com Corporation 3CSOHO100B-TX [910-A01] (rev 31)
01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti 4200] (rev a3)

Also my .config is the following:
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y

#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
# CONFIG_IDEDISK_STROKE is not set
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
CONFIG_BLK_DEV_IDESCSI=m
# CONFIG_IDE_TASK_IOCTL is not set
CONFIG_IDE_TASKFILE_IO=y

#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_IDEPNP is not set
# CONFIG_BLK_DEV_IDEPCI is not set
# CONFIG_IDE_CHIPSETS is not set
# CONFIG_BLK_DEV_IDEDMA is not set
# CONFIG_IDEDMA_AUTO is not set
# CONFIG_DMA_NONPCI is not set
# CONFIG_BLK_DEV_HD is not set

Hello,

well, you've forgotten to compile a driver for your IDE chipset!
Try "CONFIG_BLK_DEV_SIS5513=y" and recompile your kernel, but don't forget the spring-cleaning ("make mrproper") beforehand!

cu

hp_tux

It seems that i had forgot the CONFIG_BLK_DEV_IDEDMA_PCI option and that hide all the DMA enabled chipsets from my options.Thank you very much for your help.

Heh, my bad.
The kernel wasn't being installed right and so the new config didn't work.

*bump*