openwrt/target/linux/bcm27xx/patches-5.15/950-0090-ARM64-Force-hardware-emulation-of-deprecated-instruc.patch
Álvaro Fernández Rojas 20ea6adbf1 bcm27xx: add support for linux v5.15
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2022-05-17 15:11:22 +02:00

29 lines
850 B
Diff

From f9692c96f39c68cc42acdf02fb7d262920c3f0e3 Mon Sep 17 00:00:00 2001
From: Michael Zoran <mzoran@crowfest.net>
Date: Sat, 11 Feb 2017 01:18:31 -0800
Subject: [PATCH] ARM64: Force hardware emulation of deprecated
instructions.
---
arch/arm64/kernel/armv8_deprecated.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/arch/arm64/kernel/armv8_deprecated.c
+++ b/arch/arm64/kernel/armv8_deprecated.c
@@ -182,10 +182,15 @@ static void __init register_insn_emulati
switch (ops->status) {
case INSN_DEPRECATED:
+#if 0
insn->current_mode = INSN_EMULATE;
/* Disable the HW mode if it was turned on at early boot time */
run_all_cpu_set_hw_mode(insn, false);
+#else
+ insn->current_mode = INSN_HW;
+ run_all_cpu_set_hw_mode(insn, true);
insn->max = INSN_HW;
+#endif
break;
case INSN_OBSOLETE:
insn->current_mode = INSN_UNDEF;