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authorRusty Russell <rusty@rustcorp.com.au>2015-03-24 11:51:39 +1030
committerRusty Russell <rusty@rustcorp.com.au>2015-03-24 11:52:08 +1030
commit2f921b5bb0511fb698681d8ef35c48be7a9116bf (patch)
treee4f07e4d66f47c7af9142bf13e5851a77acec77f /drivers/lguest/hypercalls.c
parent7042cb4eb30967b5eb9eeba04907882f04d6b6e5 (diff)
downloadop-kernel-dev-2f921b5bb0511fb698681d8ef35c48be7a9116bf.zip
op-kernel-dev-2f921b5bb0511fb698681d8ef35c48be7a9116bf.tar.gz
lguest: suppress interrupts for single insn, not range.
The last patch reduced our interrupt-suppression region to one address, so simplify the code somewhat. Also, remove the obsolete undefined instruction ranges and the comment which refers to lguest_guest.S instead of head_32.S. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/hypercalls.c')
-rw-r--r--drivers/lguest/hypercalls.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c
index 1219af4..19a3228 100644
--- a/drivers/lguest/hypercalls.c
+++ b/drivers/lguest/hypercalls.c
@@ -211,10 +211,9 @@ static void initialize(struct lg_cpu *cpu)
/*
* The Guest tells us where we're not to deliver interrupts by putting
- * the range of addresses into "struct lguest_data".
+ * the instruction address into "struct lguest_data".
*/
- if (get_user(cpu->lg->noirq_start, &cpu->lg->lguest_data->noirq_start)
- || get_user(cpu->lg->noirq_end, &cpu->lg->lguest_data->noirq_end))
+ if (get_user(cpu->lg->noirq_iret, &cpu->lg->lguest_data->noirq_iret))
kill_guest(cpu, "bad guest page %p", cpu->lg->lguest_data);
/*
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