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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-29 10:52:16 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-29 10:52:16 -0400
commitce949717b559709423c1ef716a9db16d1dcadaed (patch)
tree003c5c064cd6104c8bff431e3431314bd614d7e0 /drivers
parent249842477c589ea29ff161ace9c8666d96e9883a (diff)
parent0acf00014bcfd71090c3b0d43c98e970108064e4 (diff)
Merge git://github.com/rustyrussell/linux
* git://github.com/rustyrussell/linux: lguest: move process freezing before pending signals check lguest: don't allow KVM-detection cpuid. lguest: Allow running under paravirt-enabled KVM.
Diffstat (limited to 'drivers')
-rw-r--r--drivers/lguest/core.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 2535933c49f..b5fdcb78a75 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -232,6 +232,13 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
232 } 232 }
233 } 233 }
234 234
235 /*
236 * All long-lived kernel loops need to check with this horrible
237 * thing called the freezer. If the Host is trying to suspend,
238 * it stops us.
239 */
240 try_to_freeze();
241
235 /* Check for signals */ 242 /* Check for signals */
236 if (signal_pending(current)) 243 if (signal_pending(current))
237 return -ERESTARTSYS; 244 return -ERESTARTSYS;
@@ -246,13 +253,6 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
246 try_deliver_interrupt(cpu, irq, more); 253 try_deliver_interrupt(cpu, irq, more);
247 254
248 /* 255 /*
249 * All long-lived kernel loops need to check with this horrible
250 * thing called the freezer. If the Host is trying to suspend,
251 * it stops us.
252 */
253 try_to_freeze();
254
255 /*
256 * Just make absolutely sure the Guest is still alive. One of 256 * Just make absolutely sure the Guest is still alive. One of
257 * those hypercalls could have been fatal, for example. 257 * those hypercalls could have been fatal, for example.
258 */ 258 */
@@ -313,7 +313,7 @@ static int __init init(void)
313 int err; 313 int err;
314 314
315 /* Lguest can't run under Xen, VMI or itself. It does Tricky Stuff. */ 315 /* Lguest can't run under Xen, VMI or itself. It does Tricky Stuff. */
316 if (paravirt_enabled()) { 316 if (get_kernel_rpl() != 0) {
317 printk("lguest is afraid of being a guest\n"); 317 printk("lguest is afraid of being a guest\n");
318 return -EPERM; 318 return -EPERM;
319 } 319 }