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Commit 4dcc53da authored by Glauber de Oliveira Costa's avatar Glauber de Oliveira Costa Committed by Rusty Russell
Browse files

lguest: initialize vcpu 



this patch initializes the first vcpu in the initialize() routing,
which is responsible for starting the process of putting the guest up.
right now, as much of the fields are still not per-vcpu, it does not
do much.

Signed-off-by: default avatarGlauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent e3283fa0

drivers/lguest/lguest_user.c

+17 −0
Original line number Diff line number Diff line
@@ -88,6 +88,18 @@ static ssize_t read(struct file *file, char __user *user, size_t size,loff_t*o) 
	return run_guest(lg, (unsigned long __user *)user);

}



static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip)

{

	if (id >= NR_CPUS)

		return -EINVAL;



	cpu->id = id;

	cpu->lg = container_of((cpu - id), struct lguest, cpus[0]);

	cpu->lg->nr_cpus++;



	return 0;

}



/*L:020 The initialization write supplies 4 pointer sized (32 or 64 bit)

 * values (in addition to the LHREQ_INITIALIZE value).  These are:

 *
@@ -134,6 +146,11 @@ static int initialize(struct file *file, const unsigned long __user *input) 
	lg->mem_base = (void __user *)(long)args[0];

	lg->pfn_limit = args[1];



	/* This is the first cpu */

	err = cpu_start(&lg->cpus[0], 0, args[3]);

	if (err)

		goto release_guest;



	/* We need a complete page for the Guest registers: they are accessible

	 * to the Guest and we can only grant it access to whole pages. */

	lg->regs_page = get_zeroed_page(GFP_KERNEL);