From: Peter Jones <pjones@redhat.com>
To: Evgeniy Baskov <baskov@ispras.ru>
Cc: Ard Biesheuvel <ardb@kernel.org>, Borislav Petkov <bp@alien8.de>,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Alexey Khoroshilov <khoroshilov@ispras.ru>,
"Limonciello, Mario" <mario.limonciello@amd.com>,
joeyli <jlee@suse.com>,
lvc-project@linuxtesting.org, x86@kernel.org,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH v3 00/24] x86_64: Improvements at compressed kernel stage
Date: Tue, 13 Dec 2022 13:03:17 -0500 [thread overview]
Message-ID: <20221213180317.qoy2l3mcpjparocq@redhat.com> (raw)
In-Reply-To: <cover.1668958803.git.baskov@ispras.ru>
On Tue, Nov 22, 2022 at 02:12:09PM +0300, Evgeniy Baskov wrote:
> This patchset is aimed
> * to improve UEFI compatibility of compressed kernel code for x86_64
> * to setup proper memory access attributes for code and rodata sections
> * to implement W^X protection policy throughout the whole execution
> of compressed kernel for EFISTUB code path.
Hi Evgeniy,
I've tested this patch set on hardware and QEMU+MU firmware, and it
works for me with a couple of minor issues:
- on one machine that has the DXE protocol but not the EFI one, we get
an error because the firmware doesn't support EFI_MEMORY_RP
- on QEMU I'm seeing the size of "(unsigned long)_head - image_base"
wind up as 0, which leads to an EFI_INVALID_PARAMETER on the
clear_memory_attributes() call.
In both cases the system winds up working, but with unnecessary console
output. I'll send you patches as a follow-up to this mail. In the mean
time:
Tested-by: Peter Jones <pjones@redhat.com>
--
Peter
next prev parent reply other threads:[~2022-12-13 18:04 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 11:12 [PATCH v3 00/24] x86_64: Improvements at compressed kernel stage Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 01/24] x86/boot: Align vmlinuz sections on page size Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 02/24] x86/build: Remove RWX sections and align on 4KB Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 03/24] x86/boot: Set cr0 to known state in trampoline Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 04/24] x86/boot: Increase boot page table size Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 05/24] x86/boot: Support 4KB pages for identity mapping Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 06/24] x86/boot: Setup memory protection for bzImage code Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 07/24] x86/build: Check W^X of vmlinux during build Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 08/24] x86/boot: Map memory explicitly Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 09/24] x86/boot: Remove mapping from page fault handler Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 10/24] efi/libstub: Move helper function to related file Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 11/24] x86/boot: Make console interface more abstract Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 12/24] x86/boot: Make kernel_add_identity_map() a pointer Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 13/24] x86/boot: Split trampoline and pt init code Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 14/24] x86/boot: Add EFI kernel extraction interface Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 15/24] efi/x86: Support extracting kernel from libstub Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 16/24] x86/boot: Reduce lower limit of physical KASLR Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 17/24] x86/boot: Reduce size of the DOS stub Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 18/24] tools/include: Add simplified version of pe.h Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 19/24] x86/build: Cleanup tools/build.c Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 20/24] x86/build: Make generated PE more spec compliant Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 21/24] efi/x86: Explicitly set sections memory attributes Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 22/24] efi/libstub: Add memory attribute protocol definitions Evgeniy Baskov
2023-01-31 8:37 ` Ard Biesheuvel
2023-01-31 10:00 ` Evgeniy Baskov
2023-01-31 10:01 ` Ard Biesheuvel
2022-11-22 11:12 ` [PATCH v3 23/24] efi/libstub: Use memory attribute protocol Evgeniy Baskov
2022-11-22 11:12 ` [PATCH v3 24/24] efi/libstub: Make memory protection warnings include newlines Evgeniy Baskov
2022-12-13 18:03 ` Peter Jones [this message]
2022-12-13 18:04 ` [PATCH 1/2] efi/x86: don't set unsupported memory attributes Peter Jones
2022-12-13 18:04 ` [PATCH 2/2] efi/x86: don't try to set page attributes on 0-sized regions Peter Jones
2022-12-13 18:13 ` [PATCH v3 00/24] x86_64: Improvements at compressed kernel stage Peter Jones
2022-12-13 22:16 ` Evgeniy Baskov
2022-12-14 10:09 ` Ard Biesheuvel
2022-12-14 11:49 ` Evgeniy Baskov
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