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Subject[PATCH v7 08/13] arch/x86: Add vendor check for MBA software controller
Date
MBA software controller support is available only on Intel.

Suggested-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Babu Moger <babu.moger@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
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