since commit
1d4e7e3 kvm: x86: increase user memory slots to 509
it became possible to use a bigger amount of memory
slots, which is used by memory hotplug for
registering hotplugged memory.
However QEMU crashes if it's used with more than ~60
pc-dimm devices and vhost-net since host kernel
in module vhost-net refuses to accept more than 64
memory regions.
Increase VHOST_MEMORY_MAX_NREGIONS limit from 64 to 509
to match KVM_USER_MEM_SLOTS to fix issue for vhost-net
and current QEMU versions.
Signed-off-by: Igor Mammedov <imammedo@xxxxxxxxxx>
---
drivers/vhost/vhost.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 78290b7..e93023e 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -37,7 +37,7 @@ MODULE_PARM_DESC(translation_cache,
" Set to 0 to disable. (default: 1)");
enum {
- VHOST_MEMORY_MAX_NREGIONS = 64,
+ VHOST_MEMORY_MAX_NREGIONS = 509,
VHOST_MEMORY_F_LOG = 0x1,
};
--
1.8.3.1
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