lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <1423842599-5174-1-git-send-email-imammedo@redhat.com>
Date:	Fri, 13 Feb 2015 15:49:59 +0000
From:	Igor Mammedov <imammedo@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	mst@...hat.com, kvm@...r.kernel.org, netdev@...r.kernel.org,
	pbonzini@...hat.com
Subject: [PATCH] vhost: support upto 509 memory regions

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 aborts 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 65
memory regions.

Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue for vhost-net.

Signed-off-by: Igor Mammedov <imammedo@...hat.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 2ee2826..ecbd7a4 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -29,7 +29,7 @@
 #include "vhost.h"
 
 enum {
-	VHOST_MEMORY_MAX_NREGIONS = 64,
+	VHOST_MEMORY_MAX_NREGIONS = 509,
 	VHOST_MEMORY_F_LOG = 0x1,
 };
 
-- 
1.8.3.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists