linux-kernel - [PATCH v3 0/3] x86: fix brk area initialization

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Date:   Thu, 30 Jun 2022 09:14:38 +0200
From:   Juergen Gross <jgross@...e.com>
To:     xen-devel@...ts.xenproject.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     jpoimboe@...nel.org, Juergen Gross <jgross@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: [PATCH v3 0/3] x86: fix brk area initialization

The brk area needs to be zeroed initially, like the .bss section.
At the same time its memory should be covered by the ELF program
headers.

Juergen Gross (3):
  x86/xen: use clear_bss() for Xen PV guests
  x86: clear .brk area at early boot
  x86: fix .brk attribute in linker script

 arch/x86/include/asm/setup.h  |  3 +++
 arch/x86/kernel/head64.c      |  4 +++-
 arch/x86/kernel/vmlinux.lds.S |  2 +-
 arch/x86/xen/enlighten_pv.c   |  8 ++++++--
 arch/x86/xen/xen-head.S       | 10 +---------
 5 files changed, 14 insertions(+), 13 deletions(-)

-- 
2.35.3