arm64: kernel: avoid literal load of virtual address with MMU off

[cascardo/linux.git] / arch / arm64 / kernel / sleep.S

diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S
index 9a3aec9..ccf79d8 100644 (file)
--- a/arch/arm64/kernel/sleep.S
+++ b/arch/arm64/kernel/sleep.S
@@ -101,12 +101,20 @@ ENTRY(cpu_resume)
        bl      el2_setup               // if in EL2 drop to EL1 cleanly
        /* enable the MMU early - so we can access sleep_save_stash by va */
        adr_l   lr, __enable_mmu        /* __cpu_setup will return here */
-       ldr     x27, =_cpu_resume       /* __enable_mmu will branch here */
+       adr_l   x27, _resume_switched   /* __enable_mmu will branch here */
        adrp    x25, idmap_pg_dir
        adrp    x26, swapper_pg_dir
        b       __cpu_setup
 ENDPROC(cpu_resume)
 
+       .pushsection    ".idmap.text", "ax"
+_resume_switched:
+       ldr     x8, =_cpu_resume
+       br      x8
+ENDPROC(_resume_switched)
+       .ltorg
+       .popsection
+
 ENTRY(_cpu_resume)
        mrs     x1, mpidr_el1
        adrp    x8, mpidr_hash