From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Borislav Petkov , Thomas Gleixner , Ingo Molnar Subject: [PATCH 4.18 25/79] x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info Date: Tue, 14 Aug 2018 19:16:44 +0200 Message-Id: <20180814171337.763702592@linuxfoundation.org> In-Reply-To: <20180814171336.799314117@linuxfoundation.org> References: <20180814171336.799314117@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Borislav Petkov Old code used to check whether CPUID ext max level is >= 0x80000008 because that last leaf contains the number of cores of the physical CPU. The three functions called there now do not depend on that leaf anymore so the check can go. Signed-off-by: Borislav Petkov Signed-off-by: Thomas Gleixner Acked-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/amd.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -850,12 +850,9 @@ static void init_amd(struct cpuinfo_x86 cpu_detect_cache_sizes(c); - /* Multi core CPU? */ - if (c->extended_cpuid_level >= 0x80000008) { - amd_detect_cmp(c); - amd_get_topology(c); - srat_detect_node(c); - } + amd_detect_cmp(c); + amd_get_topology(c); + srat_detect_node(c); init_amd_cacheinfo(c);