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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-13 13:14:05 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-13 13:14:05 -0800
commitccfff0a2bd2a30de130b5623d242ddecd0272bc2 (patch)
treef8350ca2054e1f6350cc4a308d08c60b5fa59a94 /drivers
parent3ad7befd4842afa2449026715987122a1c6dcb85 (diff)
parent61082ad6a6e1f999eef7e7e90046486c87933b1e (diff)
downloadlinux-ccfff0a2bd2a30de130b5623d242ddecd0272bc2.tar.bz2
Merge tag 'virtio-mem-for-5.16' of git://github.com/davidhildenbrand/linux
Pull virtio-mem update from David Hildenbrand: "Support the VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE feature in virtio-mem, now that "accidential" access to logically unplugged memory inside added Linux memory blocks is no longer possible, because we: - Removed /dev/kmem in commit bbcd53c96071 ("drivers/char: remove /dev/kmem for good") - Disallowed access to virtio-mem device memory via /dev/mem in commit 2128f4e21aa ("virtio-mem: disallow mapping virtio-mem memory via /dev/mem") - Sanitized access to virtio-mem device memory via /proc/kcore in commit 0daa322b8ff9 ("fs/proc/kcore: don't read offline sections, logically offline pages and hwpoisoned pages") - Sanitized access to virtio-mem device memory via /proc/vmcore in commit ce2814622e84 ("virtio-mem: kdump mode to sanitize /proc/vmcore access") The new VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE feature that will be required by some hypervisors implementing virtio-mem in the near future, so let's support it now that we safely can" * tag 'virtio-mem-for-5.16' of git://github.com/davidhildenbrand/linux: virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE
Diffstat (limited to 'drivers')
-rw-r--r--drivers/virtio/virtio_mem.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c
index 0da0af251c73..96e5a8782769 100644
--- a/drivers/virtio/virtio_mem.c
+++ b/drivers/virtio/virtio_mem.c
@@ -2889,6 +2889,7 @@ static unsigned int virtio_mem_features[] = {
#if defined(CONFIG_NUMA) && defined(CONFIG_ACPI_NUMA)
VIRTIO_MEM_F_ACPI_PXM,
#endif
+ VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE,
};
static const struct virtio_device_id virtio_mem_id_table[] = {