Re: [PATCH RFC 0/4] Paravirt-spinlock implementation for KVM guests(Version 0)

[Konrad Rzeszutek Wilk]

On Mon, Jul 26, 2010 at 11:41:50AM +0530, Srivatsa Vaddagiri wrote:
> This patch-series implements paravirt-spinlock implementation for KVM guests,
> based heavily on Xen's implementation. I tried to refactor Xen's spinlock
> implementation to make it common for both Xen and KVM - but found that 
> few differences between Xen and KVM (Xen has the ability to block on a
> particular event/irq for example) _and_ the fact that the guest kernel 
> can be compiled to support both Xen and KVM hypervisors (CONFIG_XEN and
> CONFIG_KVM_GUEST can both be turned on) makes the "common" code a eye-sore.
> There will have to be:
> 
> 	if (xen) {
> 		...
> 	} else if (kvm) {
> 		..
> 	}
> 
> or possibly:
> 
> 	alternative(NOP, some_xen_specific_call, ....)

Why not utilize the pvops path?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/