Intel: Backport In Field Scan(IFS) support for SPR · Pull Request !59 · OpenCloudOS/OpenCloudOS-Kernel

IFS is a hardware feature to run circuit level tests on a CPU core to detect problems that are not caught by parity or ECC checks.
This PR backports Intel In Field Scan(IFS) support for SPR. It supports IFS Scan At Field(SAF) multi-blob images.

The PR includes 32 commits totally as following:

1. Commits 1~13:
Upstreamed in v5.4 with 13 commits totally:
https://lore.kernel.org/lkml/20220506225410.1652287-1-tony.luck@intel.com/
https://lore.kernel.org/lkml/YoZay8YR0zRGyVu+@zn.tnic/

2. Commits 14~31:
Upstreamed in v6.2 with 24 commits totally.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a70210f41566131f88d31583f96e36cb7f5d2ad0
The first 5 upstreamed commits are dropped to keep the old microcode interface /dev/cpu/microcode.
And the 21st commit is dropped for the following commit is not added as well.
https://lore.kernel.org/all/20220710140736.6492-1-hdegoede@redhat.com/
Microcode late loading interface is not affected and kept to enable as default.

3. Commit 32:
Enabled IFS as kernel module.

**Test**

1. Built and run the kernel successfully.
2. Verified IFS SAF in SPR.

**Default config change**

CONFIG_X86_PLATFORM_DEVICES=y
        CONFIG_INTEL_IFS=m

类型	指派人员	状态
审查	robinlai	进行中 (0/1人)
测试	robinlai	进行中 (0/1人)

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