Re: [PATCH v2 1/2] KVM: nVMX: enhance allocate/free_vpid to handle shadow vpid

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On 9/15/15 8:54 PM, Paolo Bonzini wrote:

On 15/09/2015 12:30, Wanpeng Li wrote:
+	if (!nested) {
+		vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
+		if (vpid < VMX_NR_VPIDS) {
  		vmx->vpid = vpid;
  		__set_bit(vpid, vmx_vpid_bitmap);
+		}
+	} else {
+		vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
+		if (vpid < VMX_NR_VPIDS) {
+			vmx->nested.vpid02 = vpid;
+			__set_bit(vpid, vmx_vpid_bitmap);
+		}
Messy indentation, and a lot of duplicate code.  Can you instead have
(which I think was Jan's suggestion too):

static int allocate_vpid(void);
static void free_vpid(int vpid);

I see, done in v3.


That said, I like the simple solution to the "too many VPIDs for each L1
VCPU" processor.

Thanks. :-)

Regards,
Wanpeng Li

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