mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 00:36:50 +07:00
588ab3f9af
- Initial page table creation reworked to avoid breaking large block mappings (huge pages) into smaller ones. The ARM architecture requires break-before-make in such cases to avoid TLB conflicts but that's not always possible on live page tables - Kernel virtual memory layout: the kernel image is no longer linked to the bottom of the linear mapping (PAGE_OFFSET) but at the bottom of the vmalloc space, allowing the kernel to be loaded (nearly) anywhere in physical RAM - Kernel ASLR: position independent kernel Image and modules being randomly mapped in the vmalloc space with the randomness is provided by UEFI (efi_get_random_bytes() patches merged via the arm64 tree, acked by Matt Fleming) - Implement relative exception tables for arm64, required by KASLR (initial code for ARCH_HAS_RELATIVE_EXTABLE added to lib/extable.c but actual x86 conversion to deferred to 4.7 because of the merge dependencies) - Support for the User Access Override feature of ARMv8.2: this allows uaccess functions (get_user etc.) to be implemented using LDTR/STTR instructions. Such instructions, when run by the kernel, perform unprivileged accesses adding an extra level of protection. The set_fs() macro is used to "upgrade" such instruction to privileged accesses via the UAO bit - Half-precision floating point support (part of ARMv8.2) - Optimisations for CPUs with or without a hardware prefetcher (using run-time code patching) - copy_page performance improvement to deal with 128 bytes at a time - Sanity checks on the CPU capabilities (via CPUID) to prevent incompatible secondary CPUs from being brought up (e.g. weird big.LITTLE configurations) - valid_user_regs() reworked for better sanity check of the sigcontext information (restored pstate information) - ACPI parking protocol implementation - CONFIG_DEBUG_RODATA enabled by default - VDSO code marked as read-only - DEBUG_PAGEALLOC support - ARCH_HAS_UBSAN_SANITIZE_ALL enabled - Erratum workaround Cavium ThunderX SoC - set_pte_at() fix for PROT_NONE mappings - Code clean-ups -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJW6u95AAoJEGvWsS0AyF7xMyoP/3x2O6bgreSQ84BdO4JChN4+ RQ9OVdX8u2ItO9sgaCY2AA6KoiBuEjGmPl/XRuK0I7DpODTtRjEXQHuNNhz8AelC hn4AEVqamY6Z5BzHFIjs8G9ydEbq+OXcKWEdwSsBhP/cMvI7ss3dps1f5iNPT5Vv 50E/kUz+aWYy7pKlB18VDV7TUOA3SuYuGknWV8+bOY5uPb8hNT3Y3fHOg/EuNNN3 DIuYH1V7XQkXtF+oNVIGxzzJCXULBE7egMcWAm1ydSOHK0JwkZAiL7OhI7ceVD0x YlDxBnqmi4cgzfBzTxITAhn3OParwN6udQprdF1WGtFF6fuY2eRDSH/L/iZoE4DY OulL951OsBtF8YC3+RKLk908/0bA2Uw8ftjCOFJTYbSnZBj1gWK41VkCYMEXiHQk EaN8+2Iw206iYIoyvdjGCLw7Y0oakDoVD9vmv12SOaHeQljTkjoN8oIlfjjKTeP7 3AXj5v9BDMDVh40nkVayysRNvqe48Kwt9Wn0rhVTLxwdJEiFG/OIU6HLuTkretdN dcCNFSQrRieSFHpBK9G0vKIpIss1ZwLm8gjocVXH7VK4Mo/TNQe4p2/wAF29mq4r xu1UiXmtU3uWxiqZnt72LOYFCarQ0sFA5+pMEvF5W+NrVB0wGpXhcwm+pGsIi4IM LepccTgykiUBqW5TRzPz =/oS+ -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: "Here are the main arm64 updates for 4.6. There are some relatively intrusive changes to support KASLR, the reworking of the kernel virtual memory layout and initial page table creation. Summary: - Initial page table creation reworked to avoid breaking large block mappings (huge pages) into smaller ones. The ARM architecture requires break-before-make in such cases to avoid TLB conflicts but that's not always possible on live page tables - Kernel virtual memory layout: the kernel image is no longer linked to the bottom of the linear mapping (PAGE_OFFSET) but at the bottom of the vmalloc space, allowing the kernel to be loaded (nearly) anywhere in physical RAM - Kernel ASLR: position independent kernel Image and modules being randomly mapped in the vmalloc space with the randomness is provided by UEFI (efi_get_random_bytes() patches merged via the arm64 tree, acked by Matt Fleming) - Implement relative exception tables for arm64, required by KASLR (initial code for ARCH_HAS_RELATIVE_EXTABLE added to lib/extable.c but actual x86 conversion to deferred to 4.7 because of the merge dependencies) - Support for the User Access Override feature of ARMv8.2: this allows uaccess functions (get_user etc.) to be implemented using LDTR/STTR instructions. Such instructions, when run by the kernel, perform unprivileged accesses adding an extra level of protection. The set_fs() macro is used to "upgrade" such instruction to privileged accesses via the UAO bit - Half-precision floating point support (part of ARMv8.2) - Optimisations for CPUs with or without a hardware prefetcher (using run-time code patching) - copy_page performance improvement to deal with 128 bytes at a time - Sanity checks on the CPU capabilities (via CPUID) to prevent incompatible secondary CPUs from being brought up (e.g. weird big.LITTLE configurations) - valid_user_regs() reworked for better sanity check of the sigcontext information (restored pstate information) - ACPI parking protocol implementation - CONFIG_DEBUG_RODATA enabled by default - VDSO code marked as read-only - DEBUG_PAGEALLOC support - ARCH_HAS_UBSAN_SANITIZE_ALL enabled - Erratum workaround Cavium ThunderX SoC - set_pte_at() fix for PROT_NONE mappings - Code clean-ups" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (99 commits) arm64: kasan: Fix zero shadow mapping overriding kernel image shadow arm64: kasan: Use actual memory node when populating the kernel image shadow arm64: Update PTE_RDONLY in set_pte_at() for PROT_NONE permission arm64: Fix misspellings in comments. arm64: efi: add missing frame pointer assignment arm64: make mrs_s prefixing implicit in read_cpuid arm64: enable CONFIG_DEBUG_RODATA by default arm64: Rework valid_user_regs arm64: mm: check at build time that PAGE_OFFSET divides the VA space evenly arm64: KVM: Move kvm_call_hyp back to its original localtion arm64: mm: treat memstart_addr as a signed quantity arm64: mm: list kernel sections in order arm64: lse: deal with clobbered IP registers after branch via PLT arm64: mm: dump: Use VA_START directly instead of private LOWEST_ADDR arm64: kconfig: add submenu for 8.2 architectural features arm64: kernel: acpi: fix ioremap in ACPI parking protocol cpu_postboot arm64: Add support for Half precision floating point arm64: Remove fixmap include fragility arm64: Add workaround for Cavium erratum 27456 arm64: mm: Mark .rodata as RO ...
130 lines
5.6 KiB
C
130 lines
5.6 KiB
C
/*
|
|
* Based on arch/arm/kernel/asm-offsets.c
|
|
*
|
|
* Copyright (C) 1995-2003 Russell King
|
|
* 2001-2002 Keith Owens
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/kvm_host.h>
|
|
#include <asm/thread_info.h>
|
|
#include <asm/memory.h>
|
|
#include <asm/smp_plat.h>
|
|
#include <asm/suspend.h>
|
|
#include <asm/vdso_datapage.h>
|
|
#include <linux/kbuild.h>
|
|
#include <linux/arm-smccc.h>
|
|
|
|
int main(void)
|
|
{
|
|
DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
|
|
BLANK();
|
|
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
|
|
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
|
|
DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit));
|
|
DEFINE(TI_TASK, offsetof(struct thread_info, task));
|
|
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
|
|
BLANK();
|
|
DEFINE(THREAD_CPU_CONTEXT, offsetof(struct task_struct, thread.cpu_context));
|
|
BLANK();
|
|
DEFINE(S_X0, offsetof(struct pt_regs, regs[0]));
|
|
DEFINE(S_X1, offsetof(struct pt_regs, regs[1]));
|
|
DEFINE(S_X2, offsetof(struct pt_regs, regs[2]));
|
|
DEFINE(S_X3, offsetof(struct pt_regs, regs[3]));
|
|
DEFINE(S_X4, offsetof(struct pt_regs, regs[4]));
|
|
DEFINE(S_X5, offsetof(struct pt_regs, regs[5]));
|
|
DEFINE(S_X6, offsetof(struct pt_regs, regs[6]));
|
|
DEFINE(S_X7, offsetof(struct pt_regs, regs[7]));
|
|
DEFINE(S_LR, offsetof(struct pt_regs, regs[30]));
|
|
DEFINE(S_SP, offsetof(struct pt_regs, sp));
|
|
#ifdef CONFIG_COMPAT
|
|
DEFINE(S_COMPAT_SP, offsetof(struct pt_regs, compat_sp));
|
|
#endif
|
|
DEFINE(S_PSTATE, offsetof(struct pt_regs, pstate));
|
|
DEFINE(S_PC, offsetof(struct pt_regs, pc));
|
|
DEFINE(S_ORIG_X0, offsetof(struct pt_regs, orig_x0));
|
|
DEFINE(S_SYSCALLNO, offsetof(struct pt_regs, syscallno));
|
|
DEFINE(S_FRAME_SIZE, sizeof(struct pt_regs));
|
|
BLANK();
|
|
DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id.counter));
|
|
BLANK();
|
|
DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
|
|
DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags));
|
|
BLANK();
|
|
DEFINE(VM_EXEC, VM_EXEC);
|
|
BLANK();
|
|
DEFINE(PAGE_SZ, PAGE_SIZE);
|
|
BLANK();
|
|
DEFINE(DMA_BIDIRECTIONAL, DMA_BIDIRECTIONAL);
|
|
DEFINE(DMA_TO_DEVICE, DMA_TO_DEVICE);
|
|
DEFINE(DMA_FROM_DEVICE, DMA_FROM_DEVICE);
|
|
BLANK();
|
|
DEFINE(CLOCK_REALTIME, CLOCK_REALTIME);
|
|
DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC);
|
|
DEFINE(CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
|
|
DEFINE(CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE);
|
|
DEFINE(CLOCK_MONOTONIC_COARSE,CLOCK_MONOTONIC_COARSE);
|
|
DEFINE(CLOCK_COARSE_RES, LOW_RES_NSEC);
|
|
DEFINE(NSEC_PER_SEC, NSEC_PER_SEC);
|
|
BLANK();
|
|
DEFINE(VDSO_CS_CYCLE_LAST, offsetof(struct vdso_data, cs_cycle_last));
|
|
DEFINE(VDSO_XTIME_CLK_SEC, offsetof(struct vdso_data, xtime_clock_sec));
|
|
DEFINE(VDSO_XTIME_CLK_NSEC, offsetof(struct vdso_data, xtime_clock_nsec));
|
|
DEFINE(VDSO_XTIME_CRS_SEC, offsetof(struct vdso_data, xtime_coarse_sec));
|
|
DEFINE(VDSO_XTIME_CRS_NSEC, offsetof(struct vdso_data, xtime_coarse_nsec));
|
|
DEFINE(VDSO_WTM_CLK_SEC, offsetof(struct vdso_data, wtm_clock_sec));
|
|
DEFINE(VDSO_WTM_CLK_NSEC, offsetof(struct vdso_data, wtm_clock_nsec));
|
|
DEFINE(VDSO_TB_SEQ_COUNT, offsetof(struct vdso_data, tb_seq_count));
|
|
DEFINE(VDSO_CS_MULT, offsetof(struct vdso_data, cs_mult));
|
|
DEFINE(VDSO_CS_SHIFT, offsetof(struct vdso_data, cs_shift));
|
|
DEFINE(VDSO_TZ_MINWEST, offsetof(struct vdso_data, tz_minuteswest));
|
|
DEFINE(VDSO_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime));
|
|
DEFINE(VDSO_USE_SYSCALL, offsetof(struct vdso_data, use_syscall));
|
|
BLANK();
|
|
DEFINE(TVAL_TV_SEC, offsetof(struct timeval, tv_sec));
|
|
DEFINE(TVAL_TV_USEC, offsetof(struct timeval, tv_usec));
|
|
DEFINE(TSPEC_TV_SEC, offsetof(struct timespec, tv_sec));
|
|
DEFINE(TSPEC_TV_NSEC, offsetof(struct timespec, tv_nsec));
|
|
BLANK();
|
|
DEFINE(TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
|
|
DEFINE(TZ_DSTTIME, offsetof(struct timezone, tz_dsttime));
|
|
BLANK();
|
|
DEFINE(CPU_BOOT_STACK, offsetof(struct secondary_data, stack));
|
|
BLANK();
|
|
#ifdef CONFIG_KVM_ARM_HOST
|
|
DEFINE(VCPU_CONTEXT, offsetof(struct kvm_vcpu, arch.ctxt));
|
|
DEFINE(CPU_GP_REGS, offsetof(struct kvm_cpu_context, gp_regs));
|
|
DEFINE(CPU_USER_PT_REGS, offsetof(struct kvm_regs, regs));
|
|
DEFINE(CPU_FP_REGS, offsetof(struct kvm_regs, fp_regs));
|
|
DEFINE(VCPU_FPEXC32_EL2, offsetof(struct kvm_vcpu, arch.ctxt.sys_regs[FPEXC32_EL2]));
|
|
DEFINE(VCPU_HOST_CONTEXT, offsetof(struct kvm_vcpu, arch.host_cpu_context));
|
|
#endif
|
|
#ifdef CONFIG_CPU_PM
|
|
DEFINE(CPU_SUSPEND_SZ, sizeof(struct cpu_suspend_ctx));
|
|
DEFINE(CPU_CTX_SP, offsetof(struct cpu_suspend_ctx, sp));
|
|
DEFINE(MPIDR_HASH_MASK, offsetof(struct mpidr_hash, mask));
|
|
DEFINE(MPIDR_HASH_SHIFTS, offsetof(struct mpidr_hash, shift_aff));
|
|
DEFINE(SLEEP_SAVE_SP_SZ, sizeof(struct sleep_save_sp));
|
|
DEFINE(SLEEP_SAVE_SP_PHYS, offsetof(struct sleep_save_sp, save_ptr_stash_phys));
|
|
DEFINE(SLEEP_SAVE_SP_VIRT, offsetof(struct sleep_save_sp, save_ptr_stash));
|
|
#endif
|
|
DEFINE(ARM_SMCCC_RES_X0_OFFS, offsetof(struct arm_smccc_res, a0));
|
|
DEFINE(ARM_SMCCC_RES_X2_OFFS, offsetof(struct arm_smccc_res, a2));
|
|
return 0;
|
|
}
|