On 06/23/2010 12:15 PM, Alexander Graf wrote:
Alex, Joerg, well gvmcb_{read,write}{32,64}() work for nsvm? All that kmapping
is incredibly annoying.
I'm sceptical that we can actually get that to be as fast as a direct kmap, but
apart from that I don't see an obvious reason why it wouldn't.
I'm thinking of
struct kvm_cached_guest_page {
void __user **pmem;
};
static u64 kvm_read_cached_guest_page(struct kvm_vcpu *vcpu, struct
kvm_cached_guest_page *kcgp, unsigned offset)
{
u64 __user *mem = *rcu_dereference(kcgp->kcgp) + offset;
u64 ret;
if (get_user(ret, mem))
kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
return ret;
}
We could even use our own exception handler to take the error case out
of line.
--
error compiling committee.c: too many arguments to function
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