提交 f0df4e1a 编写于 作者: R Reinette Chatre 提交者: Thomas Gleixner

x86/intel_rdt: Fix incorrect loop end condition

A loop is used to check if a CAT resource's CBM of one CLOSID
overlaps with the CBM of another CLOSID of the same resource. The loop
is run over all CLOSIDs supported by the resource.

The problem with running the loop over all CLOSIDs supported by the
resource is that its number of supported CLOSIDs may be more than the
number of supported CLOSIDs on the system, which is the minimum number of
CLOSIDs supported across all resources.

Fix the loop to only consider the number of system supported CLOSIDs,
not all that are supported by the resource.

Fixes: 49f7b4ef ("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NFenghua Yu <fenghua.yu@intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: "H Peter Anvin" <hpa@zytor.com>
Cc: "Tony Luck" <tony.luck@intel.com>
Cc: "Xiaochen Shen" <xiaochen.shen@intel.com>
Cc: "Chen Yu" <yu.c.chen@intel.com>
Link: https://lkml.kernel.org/r/1537048707-76280-8-git-send-email-fenghua.yu@intel.com
上级 32d736ab
......@@ -996,7 +996,7 @@ bool rdtgroup_cbm_overlaps(struct rdt_resource *r, struct rdt_domain *d,
/* Check for overlap with other resource groups */
ctrl = d->ctrl_val;
for (i = 0; i < r->num_closid; i++, ctrl++) {
for (i = 0; i < closids_supported(); i++, ctrl++) {
ctrl_b = (unsigned long *)ctrl;
mode = rdtgroup_mode_by_closid(i);
if (closid_allocated(i) && i != closid &&
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册
新手
引导
客服 返回
顶部