Messages in this thread Patch in this message | | | From | Igor Mammedov <> | Subject | [PATCH v2 6/6] vhost: support upto 509 memory regions | Date | Wed, 17 Jun 2015 15:14:59 +0200 |
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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@redhat.com> --- 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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