Commit 1738521a authored by Aichun Shi's avatar Aichun Shi
Browse files

Revert "docs: Update documentation to reflect what TAINT_CPU_OUT_OF_SPEC means" 

Intel inclusion
category: feature
feature: Backport Intel In Field Scan(IFS) multi-blob images support
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I6L337


CVE: N/A
Reference: N/A

Intel-SIG: Revert commit 75d4e3f5 ("docs: Update documentation to
reflect what TAINT_CPU_OUT_OF_SPEC means")

-------------------------------------

This reverts commit 75d4e3f5.

This revert is to re-enable microcode late loading.

Signed-off-by: default avatarAichun Shi <aichun.shi@intel.com>
parent 5b1d64b8

Documentation/admin-guide/sysctl/kernel.rst

+1 −1
Original line number Diff line number Diff line
@@ -1352,7 +1352,7 @@ ORed together. The letters are seen in "Tainted" line of Oops reports. 
======  =====  ==============================================================

     1  `(P)`  proprietary module was loaded

     2  `(F)`  module was force loaded

     4  `(S)`  kernel running on an out of specification system

     4  `(S)`  SMP kernel oops on an officially SMP incapable processor

     8  `(R)`  module was force unloaded

    16  `(M)`  processor reported a Machine Check Exception (MCE)

    32  `(B)`  bad page referenced or some unexpected page flags

Documentation/admin-guide/tainted-kernels.rst

+5 −18
Original line number Diff line number Diff line
@@ -84,7 +84,7 @@ Bit Log Number Reason that got the kernel tainted 
===  ===  ======  ========================================================

  0  G/P       1  proprietary module was loaded

  1  _/F       2  module was force loaded

  2  _/S       4  kernel running on an out of specification system

  2  _/S       4  SMP kernel oops on an officially SMP incapable processor

  3  _/R       8  module was force unloaded

  4  _/M      16  processor reported a Machine Check Exception (MCE)

  5  _/B      32  bad page referenced or some unexpected page flags
@@ -116,23 +116,10 @@ More detailed explanation for tainting 
 1)  ``F`` if any module was force loaded by ``insmod -f``, ``' '`` if all

     modules were loaded normally.



 2)  ``S`` if the kernel is running on a processor or system that is out of

     specification: hardware has been put into an unsupported configuration,

     therefore proper execution cannot be guaranteed.

     Kernel will be tainted if, for example:



     - on x86: PAE is forced through forcepae on intel CPUs (such as Pentium M)

       which do not report PAE but may have a functional implementation, an SMP

       kernel is running on non officially capable SMP Athlon CPUs, MSRs are

       being poked at from userspace.

     - on arm: kernel running on certain CPUs (such as Keystone 2) without

       having certain kernel features enabled.

     - on arm64: there are mismatched hardware features between CPUs, the

       bootloader has booted CPUs in different modes.

     - certain drivers are being used on non supported architectures (such as

       scsi/snic on something else than x86_64, scsi/ips on non

       x86/x86_64/itanium, have broken firmware settings for the

       irqchip/irq-gic on arm64 ...).

 2)  ``S`` if the oops occurred on an SMP kernel running on hardware that

     hasn't been certified as safe to run multiprocessor.

     Currently this occurs only on various Athlons that are not

     SMP capable.



 3)  ``R`` if a module was force unloaded by ``rmmod -f``, ``' '`` if all

     modules were unloaded normally.

tools/debugging/kernel-chktaint

+1 −1
Original line number Diff line number Diff line
@@ -72,7 +72,7 @@ if [ `expr $T % 2` -eq 0 ]; then 
	addout " "

else

	addout "S"

	echo " * kernel running on an out of specification system (#2)"

	echo " * SMP kernel oops on an officially SMP incapable processor (#2)"

fi



T=`expr $T / 2`