Ryan Harper wrote: > * Avi Kivity <[EMAIL PROTECTED]> [2007-09-19 03:58]: > >> Ryan Harper wrote: >> >>>> We have a test which verifies #GP is not caused by setting the bits on >>>> either AMD or Intel chips. "Stray" bits can get turned on in some cases >>>> when switching between 64-bit, PAE and non-PAE address modes. >>>> >>>> Were you testing on a 64-bit host kernel? >>>> >>>> >>> 64-bit Host running 32-bit KVM Guest. VMware-server shouldn't be seeing >>> anything 64-bit AFAIK. >>> >>> >> If the host is 64-bit, so is the guest, although the guest can choose to >> ignore the 64-bit capabilities (and 32-bit guest OSes do; but VMware >> might be doing something tricky). >> > > Hrm. I'm not sure I understand the distiction you are making. I'll > give a 32-bit host a try without the patch and see if I see the same > behavior. >
On a 64-bit host, even if the guest kernel is 32-bit the guest could still detect the ability to run in 64-bit mode. The thinking is that VMware may be detecting 64-bit capabilities and doing something weird. I think that's somewhat orthogonal to this patch. It seems like ignoring setting of reserved bits is the right thing to do in 32-bit mode. Does anyone disagree with that? Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
