On Tue, Jan 22, 2019 at 01:35:41PM +0100, Paolo Bonzini wrote: > On 18/01/19 22:20, Sean Christopherson wrote: > > ...and of course actually call it from C now that the assembly code is > > in a dedicated sub-routine and has been cleansed of any quirks that > > would break compliance with the kernel's x86 calling conventions. > > I'm not sure about removing the clobbering. If the stack is outside L1, > could this lead to speculative execution with the guest values in the > registers? The stack belongs to the L0 kernel. Or did I misunderstand the comment? > > No problem with patches 1-26 though. > > Paolo
