diff options
| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2021-01-21 15:29:30 -0600 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-01-26 11:33:02 -0600 |
| commit | 82694854caa8badab7c5d3a19c0139e8b471b1d3 (patch) | |
| tree | 419fb41735124660c878641966adb2f7526ce94d /arch/x86/platform/pvh/head.S | |
| parent | x86/xen: Support objtool vmlinux.o validation in xen-head.S (diff) | |
| download | wireguard-linux-82694854caa8badab7c5d3a19c0139e8b471b1d3.tar.xz wireguard-linux-82694854caa8badab7c5d3a19c0139e8b471b1d3.zip | |
x86/xen/pvh: Annotate indirect branch as safe
This indirect jump is harmless; annotate it to keep objtool's retpoline
validation happy.
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/4797c72a258b26e06741c58ccd4a75c42db39c1d.1611263462.git.jpoimboe@redhat.com
Diffstat (limited to 'arch/x86/platform/pvh/head.S')
| -rw-r--r-- | arch/x86/platform/pvh/head.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index 43b4d864817e..d2ccadc247e6 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -16,6 +16,7 @@ #include <asm/boot.h> #include <asm/processor-flags.h> #include <asm/msr.h> +#include <asm/nospec-branch.h> #include <xen/interface/elfnote.h> __HEAD @@ -105,6 +106,7 @@ SYM_CODE_START_LOCAL(pvh_start_xen) /* startup_64 expects boot_params in %rsi. */ mov $_pa(pvh_bootparams), %rsi mov $_pa(startup_64), %rax + ANNOTATE_RETPOLINE_SAFE jmp *%rax #else /* CONFIG_X86_64 */ |