On 08/30/2010 02:36 PM, Avi Kivity wrote:
This patchset changes interrupt injection to be done from normal process
context instead of interrupts disabled context. This is useful for real
mode interrupt injection on Intel without the current hacks (injecting as
a software interrupt of a vm86 task), reducing latencies, and later, for
allowing nested virtualization code to use kvm_read_guest()/kvm_write_guest()
instead of kmap() to access the guest vmcb/vmcs.
Seems to survive a hack that cancels every 16th entry, after injection has
already taken place.
With the PIC reset fix posted earlier, this passes autotest on both AMD and
Intel, with in-kernel irqchip. I'll run -no-kvm-irqchip tests shortly.
Please review carefully, esp. the first patch. Any missing kvm_make_request()
there may result in a hung guest.
This is now merged, with the change pointed out by Marcelo. Windows XP
x64 fails installation without
(vmx.c handle_cr())
case 8: {
u8 cr8_prev = kvm_get_cr8(vcpu);
u8 cr8 = kvm_register_read(vcpu, reg);
kvm_set_cr8(vcpu, cr8);
skip_emulated_instruction(vcpu);
if (irqchip_in_kernel(vcpu->kvm))
return 1;
- if (cr8_prev <= cr8)
- return 1;
vcpu->run->exit_reason = KVM_EXIT_SET_TPR;
return 0;
}
Which doesn't make any sense (anyone?). The failure is present even
without the patchset, and is fixed by the same hack, so a regression was
not introduced.
--
error compiling committee.c: too many arguments to function
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