queue-6.6/revert-x86-mpparse-register-apic-address-only-once.patch

   1 From 77a1e7b046bb70fc1214cd6965399ef5490dd9a6 Mon Sep 17 00:00:00 2001
   2 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
   3 Date: Mon, 8 Apr 2024 12:42:06 +0200
   4 Subject: Revert "x86/mpparse: Register APIC address only once"
   5
   6 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
   7
   8 This reverts commit bebb5af001dc6cb4f505bb21c4d5e2efbdc112e2 which is
   9 commit f2208aa12c27bfada3c15c550c03ca81d42dcac2 upstream.
  10
  11 It is reported to cause problems in the stable branches, so revert it.
  12
  13 Link: https://lore.kernel.org/r/899b7c1419a064a2b721b78eade06659@stwm.de
  14 Reported-by: Wolfgang Walter <linux@stwm.de>
  15 Cc: Thomas Gleixner <tglx@linutronix.de>
  16 Cc: Borislav Petkov (AMD) <bp@alien8.de>
  17 Cc: Guenter Roeck <linux@roeck-us.net>
  18 Cc: Sasha Levin <sashal@kernel.org>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20 ---
  21  arch/x86/kernel/mpparse.c |   10 +++++-----
  22  1 file changed, 5 insertions(+), 5 deletions(-)
  23
  24 --- a/arch/x86/kernel/mpparse.c
  25 +++ b/arch/x86/kernel/mpparse.c
  26 @@ -196,12 +196,12 @@ static int __init smp_read_mpc(struct mp
  27         if (!smp_check_mpc(mpc, oem, str))
  28                 return 0;
  29
  30 -       if (early) {
  31 -               /* Initialize the lapic mapping */
  32 -               if (!acpi_lapic)
  33 -                       register_lapic_address(mpc->lapic);
  34 +       /* Initialize the lapic mapping */
  35 +       if (!acpi_lapic)
  36 +               register_lapic_address(mpc->lapic);
  37 +
  38 +       if (early)
  39                 return 1;
  40 -       }
  41
  42         /* Now process the configuration blocks. */
  43         while (count < mpc->length) {