- #Qualcomm atheros wlan driver high cpu usage how to#
- #Qualcomm atheros wlan driver high cpu usage windows 10#
Modules linked in: ath9k(OE+) ath9k_common(OE) ath9k_hw(OE) ath(OE) mac80211(E) cfg80211(E) rfkill(E) xen_pcifront(E) intel_rapl(E) x86_pkg_temp_thermal(E) coretemp(E) crct10dif_pclmul(E) crc32_pclmul(E) evdev(E) ghash_clmulni_intel(E) pcspkr(E) uio_netx(E) uio(E) autofs4(E) ext4(E) ecb(E) crc16(E) mbcache(E) jbd2(E) crc32c_generic(E) crc32c_intel(E) aesni_intel(E) xen_netfront(E) xen_blkfront(E) aes_x86_64(E) glue_helper(E) lrw(E) gf128mul(E) ablk_helper(E) cryptd(E) BUG: unable to handle kernel paging request at ffffc900402c0040 pcifront pci-0: read got back value 3c25001 pcifront pci-0: write dev=0000:00:00.0 - offset d size 1 val a8
#Qualcomm atheros wlan driver high cpu usage how to#
Please give any advise on this issue and especially how to approach debugging this both on Domu and Dom0 and where in xen code to look for possible issues. Running same driver on Dom0 is totally fineīellow the sigsev backtrace and xen dmesg from DomUĪs can be seen there is ioremap_ of size 0x10000 starting at ffffc900402c0000 but as i said, i noticed that anything bellow ffffc900402c1000 is not writable (from gdb using set addr = val) and only readable while anything above this address is writeable. (the card also works on the Dom0 - so the Linux driver and HW is OK).Īfter some investigation with kgdb and iommu trace on DomU it seems the iomap of PCI BAR for the device returns a a mapping f which first 0x1000 bytes are read only and that causes access violation when trying to write registers mapped to this area (all the regs with offset 0x1000 are fine. No idea what the issue is (tried also with another Atheros Card (ath10k) - similar problem). When I attach it to the DomU - the module "ath9k" is automatically loaded, but it gives an exception "iowrite32+0x2b/0x30". The Atheros card "Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) (rev 01)" is plugged into the host system (datatron).
#Qualcomm atheros wlan driver high cpu usage windows 10#
Thank You.!! Very Good Qualcomm atheros ar9485 wireless network adapter windows 10 64 driver.We are trying to run Qualcomm Atheros AR928X Wireless Network Adapter and have a crash right on driver load, following are our observations and questions.
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