On Tue, Jan 12, 2016 at 03:24:05PM -0800, Linus Torvalds wrote:> But talking to the hw people about this is certainly a good idea regardless.I'm not seeing it in this thread but I might've missed it too. Anyway, I'm being reminded that the ADD will change rFLAGS while MFENCE doesn't touch them. Do we care? -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.
On Wed, Jan 13, 2016 at 05:17:04PM +0100, Borislav Petkov wrote:> On Tue, Jan 12, 2016 at 03:24:05PM -0800, Linus Torvalds wrote: > > But talking to the hw people about this is certainly a good idea regardless. > > I'm not seeing it in this thread but I might've missed it too. Anyway, > I'm being reminded that the ADD will change rFLAGS while MFENCE doesn't > touch them. > > Do we care?Which flag do you refer to, exactly?> -- > Regards/Gruss, > Boris. > > ECO tip #101: Trim your mails when you reply.
On Wed, Jan 13, 2016 at 06:25:21PM +0200, Michael S. Tsirkin wrote:> Which flag do you refer to, exactly?All the flags in rFLAGS which ADD modifies: OF,SF,ZF,AF,PF,CF -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.