Check the patch I just submitted "libata-sff: Reenable Port Multiplier after libata-sff remodeling.". It fixes a problem with port multiplier. I had the same error signature as yours. Gwendal. On Tue, Aug 17, 2010 at 9:15 AM, Tejun Heo <tj@xxxxxxxxxx> wrote: > On 08/09/2010 07:55 PM, Tharindu Rukshan Bamunuarachchi wrote: >> 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. > > If the problem is qemu specific, it would probably be bettr to report > it to qemu mailing list. Can you please post full kernel log just in > case? > > Thanks. > > -- > tejun > -- > 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 > -- 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
