cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kprobes_insn_page.S (746B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3#include <linux/linkage.h>
      4
      5/*
      6 * insn_page is a special 4k aligned dummy function for kprobes.
      7 * It will contain all kprobed instructions that are out-of-line executed.
      8 * The page must be within the kernel image to guarantee that the
      9 * out-of-line instructions are within 2GB distance of their original
     10 * location. Using a dummy function ensures that the insn_page is within
     11 * the text section of the kernel and mapped read-only/executable from
     12 * the beginning on, thus avoiding to split large mappings if the page
     13 * would be in the data section instead.
     14 */
     15	.section .kprobes.text, "ax"
     16	.align 4096
     17ENTRY(kprobes_insn_page)
     18	.rept 2048
     19	.word 0x07fe
     20	.endr
     21ENDPROC(kprobes_insn_page)
     22	.previous