From: Ard Biesheuvel <ardb@kernel.org>
To: Peter Jones <pjones@redhat.com>
Cc: Baskov Evgeniy <baskov@ispras.ru>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
X86 ML <x86@kernel.org>, linux-efi <linux-efi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: Set the NX-compatibility flag in the PE header
Date: Wed, 13 Apr 2022 19:48:17 +0200 [thread overview]
Message-ID: <CAMj1kXFEGXnm_cz0AZUmQQd8dqAWUT=iNZk0eSqq34=BxiWwUA@mail.gmail.com> (raw)
In-Reply-To: <20220329184743.798513-1-pjones@redhat.com>
On Tue, 29 Mar 2022 at 20:47, Peter Jones <pjones@redhat.com> wrote:
>
> Following Baskov Evgeniy's "Handle UEFI NX-restricted page tables"
> patches, it's safe to set this compatibility flag to let loaders know
> they don't need to make special accommodations for kernel to load if
> pre-boot NX is enabled.
>
> Signed-off-by: Peter Jones <pjones@redhat.com>
Thanks, I've queued this up.
> ---
> arch/x86/boot/header.S | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
> index 6dbd7e9f74c..0352e4589ef 100644
> --- a/arch/x86/boot/header.S
> +++ b/arch/x86/boot/header.S
> @@ -163,7 +163,11 @@ extra_header_fields:
> .long 0x200 # SizeOfHeaders
> .long 0 # CheckSum
> .word IMAGE_SUBSYSTEM_EFI_APPLICATION # Subsystem (EFI application)
> +#ifdef CONFIG_DXE_MEM_ATTRIBUTES
> + .word IMAGE_DLL_CHARACTERISTICS_NX_COMPAT # DllCharacteristics
> +#else
> .word 0 # DllCharacteristics
> +#endif
> #ifdef CONFIG_X86_32
> .long 0 # SizeOfStackReserve
> .long 0 # SizeOfStackCommit
> --
> 2.35.1
>
next prev parent reply other threads:[~2022-04-13 17:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-24 15:43 [PATCH RFC v2 0/2] Handle UEFI NX-restricted page tables Baskov Evgeniy
2022-02-24 15:43 ` [PATCH RFC v2 1/2] libstub: declare DXE services table Baskov Evgeniy
2022-02-24 15:43 ` [PATCH RFC v2 2/2] libstub: ensure allocated memory to be executable Baskov Evgeniy
2022-02-28 16:45 ` [PATCH RFC v2 0/2] Handle UEFI NX-restricted page tables Ard Biesheuvel
2022-02-28 18:30 ` Matthew Garrett
2022-03-03 13:42 ` baskov
2022-03-03 20:47 ` Matthew Garrett
2022-03-17 13:26 ` baskov
2022-03-18 16:37 ` Peter Jones
2022-03-24 16:39 ` baskov
2022-03-25 8:06 ` Ard Biesheuvel
2022-04-13 17:50 ` Ard Biesheuvel
2022-03-29 18:47 ` Peter Jones
2022-03-29 18:47 ` [PATCH] x86: Set the NX-compatibility flag in the PE header Peter Jones
2022-04-13 17:48 ` Ard Biesheuvel [this message]
2022-03-03 14:15 ` [PATCH RFC v2 0/2] Handle UEFI NX-restricted page tables baskov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAMj1kXFEGXnm_cz0AZUmQQd8dqAWUT=iNZk0eSqq34=BxiWwUA@mail.gmail.com' \
--to=ardb@kernel.org \
--cc=baskov@ispras.ru \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=mjg59@srcf.ucam.org \
--cc=pjones@redhat.com \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.