linux

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Linus Torvalds 7006fe2f7f A set of x86 fixes:

- Fix 32-bit PTI for real. pti_clone_entry_text() is called twice, once
     before initcalls so that initcalls can use the user-mode helper and
     then again after text is set read only. Setting read only on 32-bit
     might break up the PMD mapping, which makes the second invocation of
     pti_clone_entry_text() find the mappings out of sync and failing.
 
     Allow the second call to split the existing PMDs in the user mapping
     and synchronize with the kernel mapping.
 
   - Don't make acpi_mp_wake_mailbox not read only after init as the mail
     box must be writable in the case that CPU hotplug operations happen
     after boot. Otherwise the attempt to start a CPU crashes with a write
     to read only memory.
 
   - Add a missing sanity check in mtrr_save_state() to ensure that the
     fixed MTRR MSRs are supported.
 
     Otherwise mtrr_save_state() ends up in a #GP, which is fixed up, but
     the WARN_ON() can bring systems down when panic on warn is set.
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Merge tag 'x86-urgent-2024-08-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:

 - Fix 32-bit PTI for real.

   pti_clone_entry_text() is called twice, once before initcalls so that
   initcalls can use the user-mode helper and then again after text is
   set read only. Setting read only on 32-bit might break up the PMD
   mapping, which makes the second invocation of pti_clone_entry_text()
   find the mappings out of sync and failing.

   Allow the second call to split the existing PMDs in the user mapping
   and synchronize with the kernel mapping.

 - Don't make acpi_mp_wake_mailbox read-only after init as the mail box
   must be writable in the case that CPU hotplug operations happen after
   boot. Otherwise the attempt to start a CPU crashes with a write to
   read only memory.

 - Add a missing sanity check in mtrr_save_state() to ensure that the
   fixed MTRR MSRs are supported.

   Otherwise mtrr_save_state() ends up in a #GP, which is fixed up, but
   the WARN_ON() can bring systems down when panic on warn is set.

* tag 'x86-urgent-2024-08-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mtrr: Check if fixed MTRRs exist before saving them
  x86/paravirt: Fix incorrect virt spinlock setting on bare metal
  x86/acpi: Remove __ro_after_init from acpi_mp_wake_mailbox
  x86/mm: Fix PTI for i386 some more

2024-08-11 10:20:29 -07:00

alpha

alpha: fix ioread64be()/iowrite64be() helpers

2024-08-01 15:48:03 +02:00

arc

arc: convert to generic syscall table

2024-07-10 14:23:38 +02:00

arm

ARM: soc fixes for 6.11, part 1

2024-08-09 10:06:43 -07:00

arm64

ARM: soc fixes for 6.11, part 1