From 13820bcc3096eb21a6d4dfbdec8523c6e07b8715 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 10 Jan 2018 08:39:57 -0500 Subject: [PATCH 08/26] UBUNTU: SAUCE: powerpc/kernel: Does not use sync CVE-2017-5754 Currently Ubuntu 14.04 does not have a binutils that understands hwsync. This patch simply uses sync instruction instead of hwsync Signed-off-by: Breno Leitao Signed-off-by: Stefan Bader --- arch/powerpc/kernel/exceptions-64s.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 96cbba0..68717b6 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -676,7 +676,7 @@ rfi_flush_fallback: DCBT_STOP_ALL_STREAM_IDS(r11) /* Stop prefetch streams */ /* order ld/st prior to dcbt stop all streams with flushing */ - hwsync + sync 1: li r8,0 .rept 8 /* 8-way set associative */ ldx r11,r10,r8 @@ -719,7 +719,7 @@ hrfi_flush_fallback: DCBT_STOP_ALL_STREAM_IDS(r11) /* Stop prefetch streams */ /* order ld/st prior to dcbt stop all streams with flushing */ - hwsync + sync 1: li r8,0 .rept 8 /* 8-way set associative */ ldx r11,r10,r8 -- 2.7.4