From: Jim Mattson
> Sent: 28 April 2020 01:29
> On Mon, Apr 27, 2020 at 9:59 AM Paolo Bonzini <[email protected]> wrote:
> >
> > KVM is not handling the case where EIP wraps around the 32-bit address
> > space (that is, outside long mode). This is needed both in vmx.c
> > and in emulate.c. SVM with NRIPS is okay, but it can still print
> > an error to dmesg due to integer overflow.
...
> > + if (unlikely(((rip ^ orig_rip) >> 31) == 3) &&
> > !is_64_bit_mode(vcpu))
Isn't the more obvious:
if (((rip ^ orig_rip) & 1ull << 32) ...
equivalent?
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT,
UK
Registration No: 1397386 (Wales)
