From: David S. Miller Date: Wed, 1 Feb 2006 02:34:21 +0000 (-0800) Subject: [SPARC64]: Fix too early reference to %g6 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9bc657b28eba22e36efcdf3afa08100f92971eb4;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [SPARC64]: Fix too early reference to %g6 %g6 is not necessarily set to current_thread_info() at sparc64_realfault_common. So store the fault code and address after we invoke etrap and %g6 is properly set up. Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S index c4e7740d5e82..e1dd37f5e535 100644 --- a/arch/sparc64/kernel/tsb.S +++ b/arch/sparc64/kernel/tsb.S @@ -110,10 +110,13 @@ tsb_do_itlb_fault: .globl sparc64_realfault_common sparc64_realfault_common: - stb %g4, [%g6 + TI_FAULT_CODE] ! Save fault code - stx %g5, [%g6 + TI_FAULT_ADDR] ! Save fault address + /* fault code in %g4, fault address in %g5, etrap will + * preserve these two values in %l4 and %l5 respectively + */ ba,pt %xcc, etrap ! Save trap state 1: rd %pc, %g7 ! ... + stb %l4, [%g6 + TI_FAULT_CODE] ! Save fault code + stx %l5, [%g6 + TI_FAULT_ADDR] ! Save fault address call do_sparc64_fault ! Call fault handler add %sp, PTREGS_OFF, %o0 ! Compute pt_regs arg ba,pt %xcc, rtrap_clr_l6 ! Restore cpu state