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From: Evgeniy Baskov <baskov@ispras.ru>
To: Borislav Petkov <bp@alien8.de>
Cc: Evgeniy Baskov <baskov@ispras.ru>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org,
        Alexey Khoroshilov <khoroshilov@ispras.ru>
Subject: [PATCH 1/8] x86/boot: Align vmlinuz sections on page size
Date: Mon,  1 Aug 2022 19:38:58 +0300
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 <b9f2114d04a6d784a65a9c53a6e0265ad87a18bd.1659369873.git.baskov@ispras.ru>
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To protect sections on page table level each section
needs to be aligned on page size (4KB).

Set sections alignment in linker script.

Signed-off-by: Evgeniy Baskov <baskov@ispras.ru>

diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compres=
sed/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 =3D . ;
 	}
+	. =3D ALIGN(PAGE_SIZE);
 	.rodata..compressed : {
+		_compressed =3D .;
 		*(.rodata..compressed)
+		_ecompressed =3D .;
 	}
+	. =3D ALIGN(PAGE_SIZE);
 	.text :	{
 		_text =3D .; 	/* Text */
 		*(.text)
 		*(.text.*)
 		_etext =3D . ;
 	}
+	. =3D ALIGN(PAGE_SIZE);
 	.rodata : {
 		_rodata =3D . ;
 		*(.rodata)	 /* read-only data */
 		*(.rodata.*)
 		_erodata =3D . ;
 	}
+	. =3D ALIGN(PAGE_SIZE);
 	.data :	{
 		_data =3D . ;
 		*(.data)
--=20
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