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UefiCpuPkg/CpuCommonFeaturesLib: Support X2APIC enable

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Current X2APIC is enabled in MpInitLib (used by CpuMpPei and CpuDxe) to follow
SDM suggestion. That means we only enable X2APIC if we found there are any
initial CPU ID value >= 255.

This patch is to provide one chance for platform to enable X2APIC even there is
no any initial CPU ID value >= 255.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
(cherry picked from commit 6661abb695)
This commit is contained in:
Jeff Fan
2017-05-24 13:45:25 +08:00
parent 60b6b38cde
commit dc834fb544
3 changed files with 77 additions and 10 deletions
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2
UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c
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@@ -211,7 +211,7 @@ CpuCommonFeaturesLibConstructor (
if (IsCpuFeatureSupported (CPU_FEATURE_X2APIC)) {
Status = RegisterCpuFeature (
"X2Apic",
NULL,
X2ApicGetConfigData,
X2ApicSupport,
X2ApicInitialize,
CPU_FEATURE_X2APIC,