From:   Brian Gerst <brgerst@gmail.com>
To:     linux-kernel@vger.kernel.org, x86@kernel.org
Cc:     David Woodhouse <dwmw2@infradead.org>,
        Usama Arif <usama.arif@bytedance.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Ingo Molnar <mingo@kernel.org>, Brian Gerst <brgerst@gmail.com>
Subject: [PATCH v2 0/5] x86-64: Remove global variables from boot
Date:   Fri, 24 Feb 2023 10:42:30 -0500
Message-Id: <20230224154235.277350-1-brgerst@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

This is based on the parallel boot v11 series.

Remove the global variables initial_gs, initial_stack, and
early_gdt_descr from the 64-bit boot code.  The stack, GDT, and GSBASE
can be determined from the CPU number.

v2: - Dropped first two patches which were merged into another patch in
      the parallel boot series.
    - Fixed a compile error in patch 1 found by the kernel test robot.
    - Split out the removal of STARTUP_SECONDARY into a separate patch
      and renumber the remaining flags.

Brian Gerst (5):
  x86/smpboot: Remove initial_stack on 64-bit
  x86/smpboot: Remove early_gdt_descr on 64-bit
  x86/smpboot: Remove initial_gs
  x86/smpboot: Simplify boot CPU setup
  x86/smpboot: Remove STARTUP_SECONDARY

 arch/x86/include/asm/processor.h |  6 +-
 arch/x86/include/asm/realmode.h  |  1 -
 arch/x86/include/asm/smp.h       |  5 +-
 arch/x86/kernel/acpi/sleep.c     |  5 +-
 arch/x86/kernel/head_64.S        | 99 ++++++++++++--------------------
 arch/x86/kernel/smpboot.c        |  6 +-
 arch/x86/xen/xen-head.S          |  2 +-
 7 files changed, 49 insertions(+), 75 deletions(-)

-- 
2.39.2