Public bug reported:

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

       upstream stable patchset 2022-05-06
       from git://git.kernel.org/

UBUNTU: [Config] updateconfigs for ARM64_ERRATUM_1188873
arm64: arch_timer: Add workaround for ARM erratum 1188873
arm64: arch_timer: avoid unused function warning
arm64: Add silicon-errata.txt entry for ARM erratum 1188873
arm64: Make ARM64_ERRATUM_1188873 depend on COMPAT
arm64: Add part number for Neoverse N1
arm64: Add part number for Arm Cortex-A77
arm64: Add Neoverse-N2, Cortex-A710 CPU part definition
arm64: Add Cortex-X2 CPU part definition
arm64: entry.S: Add ventry overflow sanity checks
arm64: entry: Make the trampoline cleanup optional
arm64: entry: Free up another register on kpti's tramp_exit path
arm64: entry: Move the trampoline data page before the text page
arm64: entry: Allow tramp_alias to access symbols after the 4K boundary
arm64: entry: Don't assume tramp_vectors is the start of the vectors
arm64: entry: Move trampoline macros out of ifdef'd section
arm64: entry: Make the kpti trampoline's kpti sequence optional
Revert "arm64: mmu: add the entry trampolines start/end section markers into 
sections.h"
arm64: entry: Allow the trampoline text to occupy multiple pages
arm64: entry: Add non-kpti __bp_harden_el1_vectors for mitigations
UBUNTU: [Config] updateconfigs for MITIGATE_SPECTRE_BRANCH_HISTORY
arm64: entry: Add vectors that have the bhb mitigation sequences
arm64: entry: Add macro for reading symbol addresses from the trampoline
arm64: Add percpu vectors for EL1
arm64: proton-pack: Report Spectre-BHB vulnerabilities as part of Spectre-v2
KVM: arm64: Add templates for BHB mitigation sequences
arm64: Mitigate spectre style branch history side channels
KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated
arm64: add ID_AA64ISAR2_EL1 sys register
arm64: Use the clearbhb instruction in mitigations
UBUNTU: upstream stable to v4.14.275

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu Bionic)
     Importance: Medium
     Assignee: Kamal Mostafa (kamalmostafa)
         Status: In Progress


** Tags: kernel-stable-tracking-bug

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

** Tags added: kernel-stable-tracking-bug

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Description changed:

+ SRU Justification
  
-     SRU Justification
+     Impact:
+        The upstream process for stable tree updates is quite similar
+        in scope to the Ubuntu SRU process, e.g., each patch has to
+        demonstrably fix a bug, and each patch is vetted by upstream
+        by originating either directly from a mainline/stable Linux tree or
+        a minimally backported form of that patch. The following upstream
+        stable patches should be included in the Ubuntu kernel:
  
-     Impact:
-        The upstream process for stable tree updates is quite similar
-        in scope to the Ubuntu SRU process, e.g., each patch has to
-        demonstrably fix a bug, and each patch is vetted by upstream
-        by originating either directly from a mainline/stable Linux tree or
-        a minimally backported form of that patch. The following upstream
-        stable patches should be included in the Ubuntu kernel:
+        upstream stable patchset 2022-05-06
+        from git://git.kernel.org/
  
-        upstream stable patchset 2022-05-06
-        from git://git.kernel.org/
+ UBUNTU: [Config] updateconfigs for ARM64_ERRATUM_1188873
+ arm64: arch_timer: Add workaround for ARM erratum 1188873
+ arm64: arch_timer: avoid unused function warning
+ arm64: Add silicon-errata.txt entry for ARM erratum 1188873
+ arm64: Make ARM64_ERRATUM_1188873 depend on COMPAT
+ arm64: Add part number for Neoverse N1
+ arm64: Add part number for Arm Cortex-A77
+ arm64: Add Neoverse-N2, Cortex-A710 CPU part definition
+ arm64: Add Cortex-X2 CPU part definition
+ arm64: entry.S: Add ventry overflow sanity checks
+ arm64: entry: Make the trampoline cleanup optional
+ arm64: entry: Free up another register on kpti's tramp_exit path
+ arm64: entry: Move the trampoline data page before the text page
+ arm64: entry: Allow tramp_alias to access symbols after the 4K boundary
+ arm64: entry: Don't assume tramp_vectors is the start of the vectors
+ arm64: entry: Move trampoline macros out of ifdef'd section
+ arm64: entry: Make the kpti trampoline's kpti sequence optional
+ Revert "arm64: mmu: add the entry trampolines start/end section markers into 
sections.h"
+ arm64: entry: Allow the trampoline text to occupy multiple pages
+ arm64: entry: Add non-kpti __bp_harden_el1_vectors for mitigations
+ UBUNTU: [Config] updateconfigs for MITIGATE_SPECTRE_BRANCH_HISTORY
+ arm64: entry: Add vectors that have the bhb mitigation sequences
+ arm64: entry: Add macro for reading symbol addresses from the trampoline
+ arm64: Add percpu vectors for EL1
+ arm64: proton-pack: Report Spectre-BHB vulnerabilities as part of Spectre-v2
+ KVM: arm64: Add templates for BHB mitigation sequences
+ arm64: Mitigate spectre style branch history side channels
+ KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated
+ arm64: add ID_AA64ISAR2_EL1 sys register
+ arm64: Use the clearbhb instruction in mitigations
+ UBUNTU: upstream stable to v4.14.275

** Changed in: linux (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Bionic)
     Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1972006

Title:
  Bionic update: upstream stable patchset 2022-05-06

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