diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-29 10:52:16 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-29 10:52:16 -0400 |
commit | ce949717b559709423c1ef716a9db16d1dcadaed (patch) | |
tree | 003c5c064cd6104c8bff431e3431314bd614d7e0 /drivers | |
parent | 249842477c589ea29ff161ace9c8666d96e9883a (diff) | |
parent | 0acf00014bcfd71090c3b0d43c98e970108064e4 (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.c | 16 |
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 | } |