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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-07 11:05:24 -0200
committerRusty Russell <rusty@rustcorp.com.au>2008-01-30 22:50:06 +1100
commit4dcc53da49c2387078fe8ceb7a420d125e027fc6 (patch)
treee7c7a270c5e63962c51da0d07f3be9930e7dc3ac /drivers/lguest
parente3283fa0cc5c4f9bde52339a40da89297e51b481 (diff)
downloadlwn-4dcc53da49c2387078fe8ceb7a420d125e027fc6.tar.gz
lwn-4dcc53da49c2387078fe8ceb7a420d125e027fc6.zip
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: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest')
-rw-r--r--drivers/lguest/lguest_user.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index 3b92a61ba8d2..c4bfe5a2b6b7 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -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);