Symptoms

In Windows Embedded Compact 7, a speculative memory access is missing in the translation lookaside buffer (TLB), and causes a page table walk. Erratum 754322 occurs when the page table walk starts, before the address space identifier (ASID) switch code sequence, and the page table walk completes afterward. This can populate the micro-TLB with a stale entry that may be hit with the new ASID. 

This hotfix for the erratum adds two DSB instructions in the ASID switch code sequence so that no page table walk can cross the ASID switch.

More Information

Software update information


Download information

The Windows Embedded Compact 7 Monthly Update (March 2014) is now available from Microsoft. To download this Windows Embedded Compact 7 monthly update, go to the following Microsoft Download Center website:

Windows Embedded Compact 7 updates
The kind of processor that each file applies to is visible in the name of each file in the "File information" section.


Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

  • On the Build menu, click Clean Solution, and then click Build Solution.

  • On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

The English version of this software update package has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Files that are included in this hotfix package

File name

File size

Date

Time

Path

Armtrap.s

76,220

25-Feb-2014

18:38

Private\Winceos\Coreos\Nk\Kernel\Arm

Nkmain.lib

3,551,346

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Checked

Nkprmain.lib

3,608,920

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Checked

Nkmain.lib

3,942,290

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Debug

Nkprmain.lib

4,012,862

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Debug

Nkmain.lib

2,429,314

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Retail

Nkprmain.lib

2,487,570

26-Feb-2014

18:54

Public\Common\Oak\Lib\Armv5\Retail

Nkmain.lib

3,551,280

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Checked

Nkprmain.lib

3,608,854

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Checked

Nkmain.lib

3,941,518

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Debug

Nkprmain.lib

4,012,090

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Debug

Nkmain.lib

2,429,284

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Retail

Nkprmain.lib

2,487,540

26-Feb-2014

18:55

Public\Common\Oak\Lib\Armv6\Retail

Nkmain.lib

3,540,872

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Checked

Nkprmain.lib

3,598,226

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Checked

Nkmain.lib

3,931,152

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Debug

Nkprmain.lib

4,000,888

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Debug

Nkmain.lib

2,422,768

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Retail

Nkprmain.lib

2,481,016

26-Feb-2014

18:57

Public\Common\Oak\Lib\Armv7\Retail

Nkmain.lib

3,254,618

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Checked

Nkprmain.lib

3,300,838

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Checked

Nkmain.lib

3,688,110

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Debug

Nkprmain.lib

3,756,886

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Debug

Nkmain.lib

2,194,018

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Retail

Nkprmain.lib

2,241,150

26-Feb-2014

18:58

Public\Common\Oak\Lib\Mipsii\Retail

Nkmain.lib

3,312,892

26-Feb-2014

19:00

Public\Common\Oak\Lib\Mipsii_fp\Checked

Nkprmain.lib

3,359,172

26-Feb-2014

19:00

Public\Common\Oak\Lib\Mipsii_fp\Checked

Nkmain.lib

3,764,968

26-Feb-2014

19:00

Public\Common\Oak\Lib\Mipsii_fp\Debug

Nkprmain.lib

3,833,772

26-Feb-2014

19:00

Public\Common\Oak\Lib\Mipsii_fp\Debug

Nkmain.lib

2,254,802

26-Feb-2014

18:59

Public\Common\Oak\Lib\Mipsii_fp\Retail

Nkprmain.lib

2,301,876

26-Feb-2014

18:59

Public\Common\Oak\Lib\Mipsii_fp\Retail

Nkmain.lib

3,001,012

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Checked

Nkprmain.lib

3,038,540

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Checked

Nkmain.lib

3,307,564

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Debug

Nkprmain.lib

3,357,568

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Debug

Nkmain.lib

2,066,088

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Retail

Nkprmain.lib

2,107,936

26-Feb-2014

19:01

Public\Common\Oak\Lib\Sh4\Retail

Nkmain.lib

3,079,352

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Checked

Nkprmain.lib

3,121,456

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Checked

Nkmain.lib

3,219,812

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Debug

Nkprmain.lib

3,267,656

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Debug

Nkmain.lib

2,027,994

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Retail

Nkprmain.lib

2,070,448

26-Feb-2014

19:02

Public\Common\Oak\Lib\X86\Retail



Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

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