On 12/21/2017 07:18 PM, Andi Kleen wrote:
From: Andi Kleen <[email protected]> With LTO any external assembler symbol has to be marked __visible. Mark the generated asm PV stubs __visible to prevent a linker error. Signed-off-by: Andi Kleen <[email protected]>
Reviewed-by: Boris Ostrovsky <[email protected]>
--- arch/x86/include/asm/paravirt.h | 3 ++- drivers/xen/time.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 892df375b615..f03445fbbe2f 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -745,7 +745,8 @@ static __always_inline bool pv_vcpu_is_preempted(long cpu) */ #define PV_THUNK_NAME(func) "__raw_callee_save_" #func #define PV_CALLEE_SAVE_REGS_THUNK(func) \ - extern typeof(func) __raw_callee_save_##func; \ + extern __visible typeof(func) __raw_callee_save_##func; \ + extern __visible typeof(func) func; \ \ asm(".pushsection .text;" \ ".globl " PV_THUNK_NAME(func) ";" \ diff --git a/drivers/xen/time.c b/drivers/xen/time.c index 3e741cd1409c..708a00c337d7 100644 --- a/drivers/xen/time.c +++ b/drivers/xen/time.c @@ -144,7 +144,7 @@ void xen_get_runstate_snapshot(struct vcpu_runstate_info *res) }/* return true when a vcpu could run but has no real cpu to run on */-bool xen_vcpu_stolen(int vcpu) +__visible bool xen_vcpu_stolen(int vcpu) { return per_cpu(xen_runstate, vcpu).state == RUNSTATE_runnable; }
