mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
e9e668cd27
- Disable problematic linker assertions for broken versions of LLD.
- Work around sporadic link failure with LLD and various randconfig
builds.
- Fix missing invalidation in the TLB batching code when reclaim races
with mprotect() and friends.
- Add a command-line override for MPAM to allow booting on systems with
broken firmware.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmhBcycQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNDwWCACtc4Jw3wwkmaiiP9Ner1/7wKq8xRLC2WRU
tJjWLSkeoTthxf0DZILc61rNpOalfaRK774/Xo0OiYOBpKeAi5cSaUYMyabVJGcK
k1R0KXDUu8oS6xKXmXyeuBV2pK4v4aET3E6lzUQZfvamhzuZfCvvKKrF5K8vv5Ph
eowBMWKugMrwXMOBkRgVopppobdneFuVvnoMlNNYWOy70wDekoPV3qizoVJG/ulQ
BTFunXX8Otufrm48Ye2bYalfwoiGdUQaJz/gRuHko0o3SOhqR3qZp2DWxQgBwJ+g
VI6/dRLnVQpdg6toTvS9jzPczVfLt4/5VhLevbBcJuaUOER4SOZl
=cfnk
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"We've got a couple of build fixes when using LLD, a missing TLB
invalidation and a workaround for broken firmware on SoCs with CPUs
that implement MPAM:
- Disable problematic linker assertions for broken versions of LLD
- Work around sporadic link failure with LLD and various randconfig
builds
- Fix missing invalidation in the TLB batching code when reclaim
races with mprotect() and friends
- Add a command-line override for MPAM to allow booting on systems
with broken firmware"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Add override for MPAM
arm64/mm: Close theoretical race where stale TLB entry remains valid
arm64: Work around convergence issue with LLD linker
arm64: Disable LLD linker ASSERT()s for the time being
160 lines
5.3 KiB
C
160 lines
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Linker script variables to be set after section resolution, as
|
|
* ld.lld does not like variables assigned before SECTIONS is processed.
|
|
*/
|
|
#ifndef __ARM64_KERNEL_IMAGE_VARS_H
|
|
#define __ARM64_KERNEL_IMAGE_VARS_H
|
|
|
|
#ifndef LINKER_SCRIPT
|
|
#error This file should only be included in vmlinux.lds.S
|
|
#endif
|
|
|
|
#if defined(CONFIG_LD_IS_LLD) && CONFIG_LLD_VERSION < 210000
|
|
#define ASSERT(...)
|
|
#endif
|
|
|
|
#define PI_EXPORT_SYM(sym) \
|
|
__PI_EXPORT_SYM(sym, __pi_ ## sym, Cannot export BSS symbol sym to startup code)
|
|
#define __PI_EXPORT_SYM(sym, pisym, msg)\
|
|
PROVIDE(pisym = sym); \
|
|
ASSERT((sym - KIMAGE_VADDR) < (__bss_start - KIMAGE_VADDR), #msg)
|
|
|
|
PROVIDE(__efistub_primary_entry = primary_entry);
|
|
|
|
/*
|
|
* The EFI stub has its own symbol namespace prefixed by __efistub_, to
|
|
* isolate it from the kernel proper. The following symbols are legally
|
|
* accessed by the stub, so provide some aliases to make them accessible.
|
|
* Only include data symbols here, or text symbols of functions that are
|
|
* guaranteed to be safe when executed at another offset than they were
|
|
* linked at. The routines below are all implemented in assembler in a
|
|
* position independent manner
|
|
*/
|
|
PROVIDE(__efistub_caches_clean_inval_pou = __pi_caches_clean_inval_pou);
|
|
|
|
PROVIDE(__efistub__text = _text);
|
|
PROVIDE(__efistub__end = _end);
|
|
PROVIDE(__efistub___inittext_end = __inittext_end);
|
|
PROVIDE(__efistub__edata = _edata);
|
|
#if defined(CONFIG_EFI_EARLYCON) || defined(CONFIG_SYSFB)
|
|
PROVIDE(__efistub_screen_info = screen_info);
|
|
#endif
|
|
PROVIDE(__efistub__ctype = _ctype);
|
|
|
|
PROVIDE(__pi___memcpy = __pi_memcpy);
|
|
PROVIDE(__pi___memmove = __pi_memmove);
|
|
PROVIDE(__pi___memset = __pi_memset);
|
|
|
|
PI_EXPORT_SYM(id_aa64isar1_override);
|
|
PI_EXPORT_SYM(id_aa64isar2_override);
|
|
PI_EXPORT_SYM(id_aa64mmfr0_override);
|
|
PI_EXPORT_SYM(id_aa64mmfr1_override);
|
|
PI_EXPORT_SYM(id_aa64mmfr2_override);
|
|
PI_EXPORT_SYM(id_aa64pfr0_override);
|
|
PI_EXPORT_SYM(id_aa64pfr1_override);
|
|
PI_EXPORT_SYM(id_aa64smfr0_override);
|
|
PI_EXPORT_SYM(id_aa64zfr0_override);
|
|
PI_EXPORT_SYM(arm64_sw_feature_override);
|
|
PI_EXPORT_SYM(arm64_use_ng_mappings);
|
|
PI_EXPORT_SYM(_ctype);
|
|
|
|
PI_EXPORT_SYM(swapper_pg_dir);
|
|
|
|
PI_EXPORT_SYM(_text);
|
|
PI_EXPORT_SYM(_stext);
|
|
PI_EXPORT_SYM(_etext);
|
|
PI_EXPORT_SYM(__start_rodata);
|
|
PI_EXPORT_SYM(__inittext_begin);
|
|
PI_EXPORT_SYM(__inittext_end);
|
|
PI_EXPORT_SYM(__initdata_begin);
|
|
PI_EXPORT_SYM(__initdata_end);
|
|
PI_EXPORT_SYM(_data);
|
|
|
|
#ifdef CONFIG_KVM
|
|
|
|
/*
|
|
* KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_, to
|
|
* separate it from the kernel proper. The following symbols are legally
|
|
* accessed by it, therefore provide aliases to make them linkable.
|
|
* Do not include symbols which may not be safely accessed under hypervisor
|
|
* memory mappings.
|
|
*/
|
|
|
|
/* Alternative callbacks for init-time patching of nVHE hyp code. */
|
|
KVM_NVHE_ALIAS(kvm_patch_vector_branch);
|
|
KVM_NVHE_ALIAS(kvm_update_va_mask);
|
|
KVM_NVHE_ALIAS(kvm_get_kimage_voffset);
|
|
KVM_NVHE_ALIAS(kvm_compute_final_ctr_el0);
|
|
KVM_NVHE_ALIAS(spectre_bhb_patch_loop_iter);
|
|
KVM_NVHE_ALIAS(spectre_bhb_patch_loop_mitigation_enable);
|
|
KVM_NVHE_ALIAS(spectre_bhb_patch_wa3);
|
|
KVM_NVHE_ALIAS(spectre_bhb_patch_clearbhb);
|
|
KVM_NVHE_ALIAS(alt_cb_patch_nops);
|
|
|
|
/* Global kernel state accessed by nVHE hyp code. */
|
|
KVM_NVHE_ALIAS(kvm_vgic_global_state);
|
|
|
|
/* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */
|
|
KVM_NVHE_ALIAS(nvhe_hyp_panic_handler);
|
|
|
|
/* Vectors installed by hyp-init on reset HVC. */
|
|
KVM_NVHE_ALIAS(__hyp_stub_vectors);
|
|
|
|
/* Static keys which are set if a vGIC trap should be handled in hyp. */
|
|
KVM_NVHE_ALIAS(vgic_v2_cpuif_trap);
|
|
KVM_NVHE_ALIAS(vgic_v3_cpuif_trap);
|
|
|
|
/* Static key which is set if CNTVOFF_EL2 is unusable */
|
|
KVM_NVHE_ALIAS(broken_cntvoff_key);
|
|
|
|
/* EL2 exception handling */
|
|
KVM_NVHE_ALIAS(__start___kvm_ex_table);
|
|
KVM_NVHE_ALIAS(__stop___kvm_ex_table);
|
|
|
|
/* Position-independent library routines */
|
|
KVM_NVHE_ALIAS_HYP(clear_page, __pi_clear_page);
|
|
KVM_NVHE_ALIAS_HYP(copy_page, __pi_copy_page);
|
|
KVM_NVHE_ALIAS_HYP(memcpy, __pi_memcpy);
|
|
KVM_NVHE_ALIAS_HYP(memset, __pi_memset);
|
|
|
|
#ifdef CONFIG_KASAN
|
|
KVM_NVHE_ALIAS_HYP(__memcpy, __pi_memcpy);
|
|
KVM_NVHE_ALIAS_HYP(__memset, __pi_memset);
|
|
#endif
|
|
|
|
/* Hyp memory sections */
|
|
KVM_NVHE_ALIAS(__hyp_idmap_text_start);
|
|
KVM_NVHE_ALIAS(__hyp_idmap_text_end);
|
|
KVM_NVHE_ALIAS(__hyp_text_start);
|
|
KVM_NVHE_ALIAS(__hyp_text_end);
|
|
KVM_NVHE_ALIAS(__hyp_bss_start);
|
|
KVM_NVHE_ALIAS(__hyp_bss_end);
|
|
KVM_NVHE_ALIAS(__hyp_data_start);
|
|
KVM_NVHE_ALIAS(__hyp_data_end);
|
|
KVM_NVHE_ALIAS(__hyp_rodata_start);
|
|
KVM_NVHE_ALIAS(__hyp_rodata_end);
|
|
|
|
/* pKVM static key */
|
|
KVM_NVHE_ALIAS(kvm_protected_mode_initialized);
|
|
|
|
#endif /* CONFIG_KVM */
|
|
|
|
#ifdef CONFIG_EFI_ZBOOT
|
|
_kernel_codesize = ABSOLUTE(__inittext_end - _text);
|
|
#endif
|
|
|
|
/*
|
|
* LLD will occasionally error out with a '__init_end does not converge' error
|
|
* if INIT_IDMAP_DIR_SIZE is defined in terms of _end, as this results in a
|
|
* circular dependency. Counter this by dimensioning the initial IDMAP page
|
|
* tables based on kimage_limit, which is defined such that its value should
|
|
* not change as a result of the initdata segment being pushed over a 64k
|
|
* segment boundary due to changes in INIT_IDMAP_DIR_SIZE, provided that its
|
|
* value doesn't change by more than 2M between linker passes.
|
|
*/
|
|
kimage_limit = ALIGN(ABSOLUTE(_end + SZ_64K), SZ_2M);
|
|
|
|
#undef ASSERT
|
|
|
|
#endif /* __ARM64_KERNEL_IMAGE_VARS_H */
|