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UefiCpuPkg S3Resume2: Move the call to RestoreS3PageTables() earlier before SMM S3 resume. 

SMM S3 resume may change memory cache type for flash memory range and thus RestoreS3PageTables() in which loops are executed to create page table would have negative performance impact on S3 resume. Move the call to RestoreS3PageTables() earlier before SMM S3 resume can avoid this issue.

Signed-off-by: Sun Rui <rui.sun@intel.com>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13231 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3 2012-05-02 02:23:18 +00:00
parent 1d602b12ab
commit 3a69f7cbe7
1 changed files with 7 additions and 4 deletions
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11
UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c
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@ -696,10 +696,6 @@ S3ResumeExecuteBootScript (
}
if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {
//
// Need reconstruct page table here, since we do not trust ACPINvs.
//
RestoreS3PageTables ((UINTN)AcpiS3Context->S3NvsPageTableAddress);
AsmWriteCr3 ((UINTN)AcpiS3Context->S3NvsPageTableAddress);
}
@ -906,6 +902,13 @@ S3RestoreConfig2 (
CpuDeadLoop ();
}
if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {
//
// Need reconstruct page table here, since we do not trust ACPINvs.
//
RestoreS3PageTables ((UINTN)AcpiS3Context->S3NvsPageTableAddress);
}
//
// Attempt to use content from SMRAM first
//