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During Linux boot, the operating system may upgrade the processor microcode if Linux has a newer version than what is currently installed.If Linux has been configured to enable the serial console, the following will be observed:When Red Hat Enterprise Linux updates the microcoode, messages similar to the following are displayed on the serial console:[ 5.318074] microcode: Current revision: 0x0d0003f5[ 5.318076] microcode: Updated early from: 0x0d0003e7When SUSE Linux Enterprise Server 15 updates the microcode, a message similar to the following is displayed on the serial console:[ 0.000000][ T0] microcode: updated early: 0xd0003e7 -> 0xd0003f5, date = 2024-08-02The system may stop responding when alternate processors are brought online as follows:[ 3.314224] smp: Bringing up secondary CPUs ...[ 3.315204] smpboot: x86: Booting SMP configuration:[ 3.315206] .... node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15 #16 #17 #18 #19 #20 #21 #22 #23 #24 #25 #26 #27 #28 #29 #30 #31Access SMM communication forbidden address (0x0)!It is invoked from the instruction before IP(0x7677CD87) in module c:\gnext\Build\U46Pkg\RELEASE_VS2015\X64\ServerRasPkg\ProcessorErrorHandler\ProcessorErrorHandler\DEBUG\ProcessorErrorHandler.pdb)If Linux has not been configured to enable the serial console, the following will be observed:Only the "SMM ..." message is displayed on the serial console. The iLO VGA will not display any messages from Linux.
Any HPE ProLiant DL380 Gen10 Plus server running Linux.This has only been observed on the HPE ProLiant DL380 Gen10 Plus server.
Intel periodically releases newer version of microcode that a Linux patch may try to update with. To resolve this issue, update the System ROM to the most recent version recommended for the Smart Update Tools (SUT) on support.hpe.com.To download the latest System ROM, perform the following steps:Click the following link:Hewlett Packard Enterprise Support CenterEnter a product name (e.g., "Smart Update Tools") in the text search field and wait for a list of Suggested Products to display. From the Suggested Products list displayed, identify the desired product and select it.The page should refresh to display the "DRIVERS AND SOFTWARE" tab and the components that support the selected product. From the "DRIVERS AND SOFTWARE" expandable filter menus on the left side of the page:Locate and select theSmart Update Tools for Linux.Note: To ensure that you have selected the latest version of the firmware/driver, click the Revision History tab to check if a new version of the firmware/driver is available.For more important information, review the Release Notes tab.Click theDownloadbutton.
Operating Systems Affected:Red Hat Enterprise Linux 9.4, SUSE Linux Enterprise Server 15
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