From dfa88658fb0583abb92e062c7a9cd5a5b94f2a46 Mon Sep 17 00:00:00 2001 From: Diana Craciun Date: Wed, 12 Dec 2018 16:03:09 +0200 Subject: [PATCH] powerpc/fsl: Update Spectre v2 reporting Report branch predictor state flush as a mitigation for Spectre variant 2. Signed-off-by: Diana Craciun Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/security.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index 9ab771b1aebb..9b8631533e02 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -213,8 +213,11 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c if (count_cache_flush_type == COUNT_CACHE_FLUSH_HW) seq_buf_printf(&s, "(hardware accelerated)"); - } else + } else if (btb_flush_enabled) { + seq_buf_printf(&s, "Mitigation: Branch predictor state flush"); + } else { seq_buf_printf(&s, "Vulnerable"); + } seq_buf_printf(&s, "\n"); -- 2.30.2