[PATCH 4.4 082/137] ARM: OMAP2+: Fix l2_inv_api_params for rodata
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2016-02-24 04:34:48
Also in:
lkml
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Lindgren <tony@atomide.com>
commit 0a0b13275558c32bbf6241464a7244b1ffd5afb3 upstream.
We don't want to write to .text, so let's move l2_inv_api_params
to .data and access it via a pointer.
Cc: Kees Cook <redacted>
Cc: Laura Abbott <redacted>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <redacted>
Cc: Russell King <redacted>
Cc: Tero Kristo <redacted>
Acked-by: Nicolas Pitre <redacted>
Fixes: 1e6b48116a95 ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/mach-omap2/sleep34xx.S | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S@@ -427,12 +427,14 @@ skipl2dis: and r1, #0x700 cmp r1, #0x300 beq l2_inv_gp + adr r0, l2_inv_api_params_offset + ldr r3, [r0] + add r3, r3, r0 @ r3 points to dummy parameters mov r0, #40 @ set service ID for PPA mov r12, r0 @ copy secure Service ID in r12 mov r1, #0 @ set task id for ROM code in r1 mov r2, #4 @ set some flags in r2, r6 mov r6, #0xff - adr r3, l2_inv_api_params @ r3 points to dummy parameters dsb @ data write barrier dmb @ data memory barrier smc #1 @ call SMI monitor (smi #1)
@@ -466,8 +468,8 @@ skipl2dis: b logic_l1_restore .align -l2_inv_api_params: - .word 0x1, 0x00 +l2_inv_api_params_offset: + .long l2_inv_api_params - . l2_inv_gp: /* Execute smi to invalidate L2 cache */ mov r12, #0x1 @ set up to invalidate L2
@@ -516,6 +518,10 @@ control_mem_rta: l2dis_3630: .word 0 + .data +l2_inv_api_params: + .word 0x1, 0x00 + /* * Internal functions */