Re: [PATCH 6.1] x86/mm: Don't disable PCID when INVLPG has been fixed by microcode

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[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: f24f669d03f884a6ef95cca84317d0f329e93961

WARNING: Author mismatch between patch and upstream commit:
Backport author: Pawan Gupta<pawan.kumar.gupta@xxxxxxxxxxxxxxx>
Commit author: Xi Ruoyao<xry111@xxxxxxxxxxx>

Status in newer kernel trees:
6.13.y | Present (exact SHA1)
6.12.y | Not found
6.6.y | Not found

Note: The patch differs from the upstream commit:
---
1:  f24f669d03f88 ! 1:  52d35a0a69a69 x86/mm: Don't disable PCID when INVLPG has been fixed by microcode
    @@ Metadata
      ## Commit message ##
         x86/mm: Don't disable PCID when INVLPG has been fixed by microcode
     
    +    commit f24f669d03f884a6ef95cca84317d0f329e93961 upstream.
    +
         Per the "Processor Specification Update" documentations referred by
         the intel-microcode-20240312 release note, this microcode release has
         fixed the issue for all affected models.
    @@ Commit message
         Intel.
     
         [ dhansen: comment and changelog tweaks ]
    +    [ pawan: backported to 6.1
    +             s/ATOM_GRACEMONT/ALDERLAKE_N/ ]
     
         Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxx>
         Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
         Acked-by: Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
    +    Signed-off-by: Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
         Link: https://lore.kernel.org/all/168436059559.404.13934972543631851306.tip-bot2@tip-bot2/
         Link: https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20240312
         Link: https://cdrdv2.intel.com/v1/dl/getContent/740518 # RPL042, rev. 13
    @@ arch/x86/mm/init.c: static void __init probe_page_size_mask(void)
     + * these CPUs.  New microcode fixes the issue.
       */
      static const struct x86_cpu_id invlpg_miss_ids[] = {
    --	X86_MATCH_VFM(INTEL_ALDERLAKE,	    0),
    --	X86_MATCH_VFM(INTEL_ALDERLAKE_L,    0),
    --	X86_MATCH_VFM(INTEL_ATOM_GRACEMONT, 0),
    --	X86_MATCH_VFM(INTEL_RAPTORLAKE,	    0),
    --	X86_MATCH_VFM(INTEL_RAPTORLAKE_P,   0),
    --	X86_MATCH_VFM(INTEL_RAPTORLAKE_S,   0),
    -+	X86_MATCH_VFM(INTEL_ALDERLAKE,	    0x2e),
    -+	X86_MATCH_VFM(INTEL_ALDERLAKE_L,    0x42c),
    -+	X86_MATCH_VFM(INTEL_ATOM_GRACEMONT, 0x11),
    -+	X86_MATCH_VFM(INTEL_RAPTORLAKE,	    0x118),
    -+	X86_MATCH_VFM(INTEL_RAPTORLAKE_P,   0x4117),
    -+	X86_MATCH_VFM(INTEL_RAPTORLAKE_S,   0x2e),
    +-	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE,      0),
    +-	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L,    0),
    +-	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N,    0),
    +-	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE,     0),
    +-	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P,   0),
    +-	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S,   0),
    ++	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE,      0x2e),
    ++	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L,    0x42c),
    ++	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N,    0x11),
    ++	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE,     0x118),
    ++	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P,   0x4117),
    ++	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S,   0x2e),
      	{}
      };
      
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.1.y        |  Success    |  Success   |




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