Commit-ID: 983bb6d254c77aaec581473e11c2eb859294f1f2 Gitweb: http://git.kernel.org/tip/983bb6d254c77aaec581473e11c2eb859294f1f2 Author: Josh Poimboeuf <jpoim...@redhat.com> AuthorDate: Sun, 28 Feb 2016 22:22:36 -0600 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 29 Feb 2016 08:35:10 +0100
x86/xen: Mark xen_cpuid() stack frame as non-standard objtool reports the following false positive warning: arch/x86/xen/enlighten.o: warning: objtool: xen_cpuid()+0x41: can't find jump dest instruction at .text+0x108 The warning is due to xen_cpuid()'s use of XEN_EMULATE_PREFIX to insert some fake instructions which objtool doesn't know how to decode. Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Andy Lutomirski <l...@kernel.org> Cc: Arnaldo Carvalho de Melo <a...@kernel.org> Cc: Bernd Petrovitsch <be...@petrovitsch.priv.at> Cc: Boris Ostrovsky <boris.ostrov...@oracle.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Chris J Arges <chris.j.ar...@canonical.com> Cc: David Vrabel <david.vra...@citrix.com> Cc: Jiri Slaby <jsl...@suse.cz> Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Michal Marek <mma...@suse.cz> Cc: Namhyung Kim <namhy...@gmail.com> Cc: Pedro Alves <pal...@redhat.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: live-patch...@vger.kernel.org Link: http://lkml.kernel.org/r/bb88399840406629e3417831dc371ecd2842e2a6.1456719558.git.jpoim...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/xen/enlighten.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index d09e4c9..5c45a69 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -32,6 +32,7 @@ #include <linux/gfp.h> #include <linux/memblock.h> #include <linux/edd.h> +#include <linux/frame.h> #ifdef CONFIG_KEXEC_CORE #include <linux/kexec.h> @@ -351,8 +352,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx, *cx &= maskecx; *cx |= setecx; *dx &= maskedx; - } +STACK_FRAME_NON_STANDARD(xen_cpuid); /* XEN_EMULATE_PREFIX */ static bool __init xen_check_mwait(void) {
