diff options
| -rw-r--r-- | arch/x86/platform/pvh/head.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index ba4d0eab4436..14b4345d9bae 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -125,7 +125,20 @@ SYM_CODE_START_LOCAL(pvh_start_xen) xor %edx, %edx wrmsr + /* + * Calculate load offset and store in phys_base. __pa() needs + * phys_base set to calculate the hypercall page in xen_pvh_init(). + */ + movq %rbp, %rbx + subq $_pa(pvh_start_xen), %rbx + movq %rbx, phys_base(%rip) call xen_prepare_pvh + /* + * Clear phys_base. __startup_64 will *add* to its value, + * so reset to 0. + */ + xor %rbx, %rbx + movq %rbx, phys_base(%rip) /* startup_64 expects boot_params in %rsi. */ lea pvh_bootparams(%rip), %rsi |