Category "linux-device-driver"

Does QEMU emulate enough features for vfio to work in the guest?

I'm considering using vfio instead of uio to access a PCI device from userspace code within a QEMU guest. Can Linux running as a x86_64 QEMU guest use the vfio

How to build multiple linux kernel module with multiple source files in a single Makefile?

I am trying to build a set of Linux kernel modules with multiple source files: obj-m += mst_pciconf.o mst_pci.o mst-objs += nnt_device.o nnt_dma.o nnt_pci_conf_

What is the benefit of calling ioread functions when using memory mapped IO

To use memory mapped I/O, we need to first call request_mem_region. struct resource *request_mem_region( unsigned long start, u

Is the sscanf function in the Linux kernel susceptible to buffer overflow attacks?

From what I understand, a typical buffer overflow attack occurs when an attack overflows a buffer of memory on the stack, thus allowing the attacker to inject m

Determine architecture when compiling linux module

I am writing a kernel module and in it I have the following piece of code: dma_dev->coherent_dma_mask = DMA_BIT_MASK(64); I do not always want 64 in there

Commands to control the volume of a connected bluetooth device in Linux? [closed]

Let's say I have paired and connected a Bluetooth headset successfully to my Linux system. I know I can check my Bluetooth device MAC id from

wait_for_completion for submit_bio in make_request not returning

I am writing a custom block driver in the Linux kernel and in my make_request routine, on writes I need to read the data of the bio's specified sector (from the

why struct cdev has kobject member?

It's strange that struct cdev has struct kobject member, do any body knows the reason?

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