Re: [PATCH 14/21] x86/xen: Support objtool vmlinux.o validation in xen-head.S

2021-01-15 Thread Josh Poimboeuf
On Fri, Jan 15, 2021 at 06:17:25AM +0100, Jürgen Groß wrote: > On 14.01.21 20:40, Josh Poimboeuf wrote: > > The Xen hypercall page is filled with zeros, causing objtool to fall > > through all the empty hypercall functions until it reaches a real > > function, resulting in a stack state mismatch. >

Re: [PATCH 14/21] x86/xen: Support objtool vmlinux.o validation in xen-head.S

2021-01-14 Thread Jürgen Groß
On 14.01.21 20:40, Josh Poimboeuf wrote: The Xen hypercall page is filled with zeros, causing objtool to fall through all the empty hypercall functions until it reaches a real function, resulting in a stack state mismatch. The build-time contents of the hypercall page don't matter, since it gets

Re: [PATCH 14/21] x86/xen: Support objtool vmlinux.o validation in xen-head.S

2021-01-14 Thread boris . ostrovsky
On 1/14/21 2:40 PM, Josh Poimboeuf wrote: > The Xen hypercall page is filled with zeros, causing objtool to fall > through all the empty hypercall functions until it reaches a real > function, resulting in a stack state mismatch. > > The build-time contents of the hypercall page don't matter, sin