[PATCH v6 09/14] arch/x86: Add vendor check for MBA software controller

[Moger, Babu]

MBA software controller support is available only on Intel.

Suggested-by: Fenghua Yu <fenghua...@intel.com>
Signed-off-by: Babu Moger <babu.mo...@amd.com>
---
 arch/x86/kernel/cpu/resctrl_rdtgroup.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/resctrl_rdtgroup.c 
b/arch/x86/kernel/cpu/resctrl_rdtgroup.c
index 8b6b4a8bb7ca..022a56096024 100644
--- a/arch/x86/kernel/cpu/resctrl_rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl_rdtgroup.c
@@ -1878,7 +1878,10 @@ static int parse_rdtgroupfs_options(char *data)
                        if (ret)
                                goto out;
                } else if (!strcmp(token, "mba_MBps")) {
-                       ret = set_mba_sc(true);
+                       if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
+                               ret = set_mba_sc(true);
+                       else
+                               ret = -EINVAL;
                        if (ret)
                                goto out;
                } else {
-- 
2.17.1