[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] credit scheduler issues in 64bit hypervisor

On 1 Jul 2006, at 16:22, Li, Xin B wrote:

This is caused by a vmcs bug, the root cause is on x86_64, a VMX domain
is killed without any vmentry (caused by "Error: Device 768 (vbd) could
not be connected. Hotplug scripts not working."), but then a VMCLEAR is
still executed on its unlaunched VMCS.
the following patch fixes it.

Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>

This patch is itself buggy: Just because a VMCS hasn't been launched doesn't mean it hasn't been activated on some CPU. I think the original bug would be better fixed by only calling vmx_clear_vmcs() in vmx_destroy_vmcs() if arch_vmx->vmcs != NULL. Even better would be not to allocate the VMCS so darn late.

 -- Keir

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.