diff options
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 4 | ||||
| -rw-r--r-- | mm/Kconfig.debug | 15 | ||||
| -rw-r--r-- | mm/page_poison.c | 3 |
3 files changed, 5 insertions, 17 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index e53faed6ba93..8985fc2cea86 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -1114,9 +1114,7 @@ static int virtballoon_validate(struct virtio_device *vdev) * page reporting as it could potentially change the contents * of our free pages. */ - if (!want_init_on_free() && - (IS_ENABLED(CONFIG_PAGE_POISONING_NO_SANITY) || - !page_poisoning_enabled_static())) + if (!want_init_on_free() && !page_poisoning_enabled_static()) __virtio_clear_bit(vdev, VIRTIO_BALLOON_F_PAGE_POISON); else if (!virtio_has_feature(vdev, VIRTIO_BALLOON_F_PAGE_POISON)) __virtio_clear_bit(vdev, VIRTIO_BALLOON_F_REPORTING); diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index c57786ad5be9..14e29fe5bfa6 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -74,18 +74,11 @@ config PAGE_POISONING Note that "poison" here is not the same thing as the "HWPoison" for CONFIG_MEMORY_FAILURE. This is software poisoning only. - If unsure, say N + If you are only interested in sanitization of freed pages without + checking the poison pattern on alloc, you can boot the kernel with + "init_on_free=1" instead of enabling this. -config PAGE_POISONING_NO_SANITY - depends on PAGE_POISONING - bool "Only poison, don't sanity check" - help - Skip the sanity checking on alloc, only fill the pages with - poison on free. This reduces some of the overhead of the - poisoning feature. - - If you are only interested in sanitization, say Y. Otherwise - say N. + If unsure, say N config PAGE_POISONING_ZERO bool "Use zero for poisoning instead of debugging value" diff --git a/mm/page_poison.c b/mm/page_poison.c index 4d75fc9ccc7a..06ec518b2089 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -51,9 +51,6 @@ static void check_poison_mem(unsigned char *mem, size_t bytes) unsigned char *start; unsigned char *end; - if (IS_ENABLED(CONFIG_PAGE_POISONING_NO_SANITY)) - return; - start = memchr_inv(mem, PAGE_POISON, bytes); if (!start) return; |