From: Evgeniy Baskov <baskov@ispras.ru>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Evgeniy Baskov <baskov@ispras.ru>, 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>,
Peter Jones <pjones@redhat.com>,
"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: [PATCH v3 01/24] x86/boot: Align vmlinuz sections on page size
Date: Tue, 22 Nov 2022 14:12:10 +0300 [thread overview]
Message-ID: <a2cff4833c33a3493764c00794416ce6536e66ad.1668958803.git.baskov@ispras.ru> (raw)
In-Reply-To: <cover.1668958803.git.baskov@ispras.ru>
To protect sections on page table level each section
needs to be aligned on page size (4KB).
Set sections alignment in linker script.
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Evgeniy Baskov <baskov@ispras.ru>
---
arch/x86/boot/compressed/vmlinux.lds.S | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 112b2375d021..6be90f1a1198 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -27,21 +27,27 @@ SECTIONS
HEAD_TEXT
_ehead = . ;
}
+ . = ALIGN(PAGE_SIZE);
.rodata..compressed : {
+ _compressed = .;
*(.rodata..compressed)
+ _ecompressed = .;
}
+ . = ALIGN(PAGE_SIZE);
.text : {
_text = .; /* Text */
*(.text)
*(.text.*)
_etext = . ;
}
+ . = ALIGN(PAGE_SIZE);
.rodata : {
_rodata = . ;
*(.rodata) /* read-only data */
*(.rodata.*)
_erodata = . ;
}
+ . = ALIGN(PAGE_SIZE);
.data : {
_data = . ;
*(.data)
--
2.37.4
next prev parent reply other threads:[~2022-11-22 11:13 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 ` Evgeniy Baskov [this message]
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 ` [PATCH v3 00/24] x86_64: Improvements at compressed kernel stage Peter Jones
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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