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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crash_core.c (1372B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Copyright (C) Linaro.
      4 * Copyright (C) Huawei Futurewei Technologies.
      5 */
      6
      7#include <linux/crash_core.h>
      8#include <asm/cpufeature.h>
      9#include <asm/memory.h>
     10#include <asm/pgtable-hwdef.h>
     11
     12static inline u64 get_tcr_el1_t1sz(void);
     13
     14static inline u64 get_tcr_el1_t1sz(void)
     15{
     16	return (read_sysreg(tcr_el1) & TCR_T1SZ_MASK) >> TCR_T1SZ_OFFSET;
     17}
     18
     19void arch_crash_save_vmcoreinfo(void)
     20{
     21	VMCOREINFO_NUMBER(VA_BITS);
     22	/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
     23	vmcoreinfo_append_str("NUMBER(MODULES_VADDR)=0x%lx\n", MODULES_VADDR);
     24	vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
     25	vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START);
     26	vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
     27	vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START);
     28	vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END);
     29	vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
     30						kimage_voffset);
     31	vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
     32						PHYS_OFFSET);
     33	vmcoreinfo_append_str("NUMBER(TCR_EL1_T1SZ)=0x%llx\n",
     34						get_tcr_el1_t1sz());
     35	vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
     36	vmcoreinfo_append_str("NUMBER(KERNELPACMASK)=0x%llx\n",
     37						system_supports_address_auth() ?
     38						ptrauth_kernel_pac_mask() : 0);
     39}