hi All, I am getting following message when I try to start my qemu/kvm virtual machine. I have been using qemu/kvm setup for last couple of months, issue was introduced after upgrading to v2.6.35-rc6. VM starts as usual when I disable SMP. Issue is not visible in v2.6.34x. [ 6.052229] ata1.01: qc timeout (cmd 0xec) [ 6.054105] ata1.01: failed to IDENTIFY (I/O error, err_mask=0x4) [ 6.056653] ata2.01: qc timeout (cmd 0xec) [ 6.058453] ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) [ 16.212186] ata1.01: qc timeout (cmd 0xec) [ 16.214056] ata1.01: failed to IDENTIFY (I/O error, err_mask=0x4) [ 16.220146] ata2.01: qc timeout (cmd 0xec) [ 16.221986] ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) [ 46.376202] ata1.01: qc timeout (cmd 0xec) [ 46.378164] ata1.01: failed to IDENTIFY (I/O error, err_mask=0x4) [ 46.384165] ata2.01: qc timeout (cmd 0xec) [ 46.386140] ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) I think following CONFIGs are introduced with latest version ... could there be any relation to above error .. CONFIG_IO_DELAY_TYPE_0X80=0 CONFIG_IO_DELAY_TYPE_0XED=1 CONFIG_IO_DELAY_TYPE_UDELAY=2 CONFIG_IO_DELAY_TYPE_NONE=3 CONFIG_IO_DELAY_0X80=y Please provide any clue or debug method to resolve the issue ? Could this be an issue with kvm/qemu ? Sorry if i am addressing wrong mailing-list. cheers tharindu -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html