guest_cpu_read()

Read data from a vCPU

Synopsis:

#include <qvm/guest.h>

int guest_cpu_read(struct guest_cpu *gcp,
                   unsigned flags,
                   const struct qvm_state_block *blk,
                   unsigned nblks,
                   void *data,
                   unsigned data_len)

Arguments:

gcp: A pointer to the source vCPU.
flags: State read (GXF_*) flags.
blk: An array of qvm_state_block structures of source information.
nblks: The number of blocks in the array referenced by blk.
data: A pointer to where the data is to be placed.
data_len: The length, in bytes, of the destination buffer.

Description:

This function is typically used by the vdev's vwrite() callback.

Returns:

EOK if successful; otherwise, an error code.