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linux/arch/riscv/include/asm
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Alexandre Ghiti 1ff95eb2be
riscv: Fix RISCV_ALTERNATIVE_EARLY 
RISCV_ALTERNATIVE_EARLY will issue sbi_ecall() very early in the boot
process, before the first memory mapping is setup so we can't have any
instrumentation happening here.

In addition, when the kernel is relocatable, we must also not issue any
relocation this early since they would have been patched virtually only.

So, instead of disabling instrumentation for the whole kernel/sbi.c file
and compiling it with -fno-pie, simply move __sbi_ecall() and
__sbi_base_ecall() into their own file where this is fixed.

Reported-by: Conor Dooley <conor.dooley@microchip.com>
Closes: https://lore.kernel.org/linux-riscv/20240813-pony-truck-3e7a83e9759e@spud/
Reported-by: syzbot+cfbcb82adf6d7279fd35@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-riscv/00000000000065062c061fcec37b@google.com/
Fixes: 1745cfafeb ("riscv: don't use global static vars to store alternative data")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240829165048.49756-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
 		2024-09-03 07:57:55 -07:00
..
vdso riscv: Provide a definition for 'pause' 2024-07-12 03:16:39 -07:00
vendor_extensions riscv: Extend cpufeature.c to detect vendor extensions 2024-07-22 15:36:54 -07:00
Kbuild riscv: convert to generic syscall table 2024-07-10 14:23:38 +02:00
acenv.h RISC-V: Add support to build the ACPI core 2023-06-01 08:45:01 -07:00
acpi.h ACPI: RISCV: Add NUMA support based on SRAT and SLIT 2024-07-22 07:13:06 -07:00
alternative-macros.h riscv: alternatives: fix a typo in comment 2023-08-02 13:49:07 -07:00
alternative.h Merge patch series "Add non-coherent DMA support for AX45MP" 2023-09-08 11:24:34 -07:00
arch_hweight.h riscv: lib: relax assembly constraints in hweight 2024-07-15 08:46:46 -07:00
archrandom.h RISC-V: Implement archrandom when Zkr is available 2024-01-17 18:20:49 -08:00
asm-extable.h riscv: select DCACHE_WORD_ACCESS for efficient unaligned access HW 2024-01-09 20:18:20 -08:00
asm-offsets.h
…
asm-prototypes.h riscv: vector: allow kernel-mode Vector with preemption 2024-01-16 07:14:02 -08:00
asm.h riscv: blacklist assembly symbols for kprobe 2024-01-24 15:59:42 -08:00
assembler.h RISC-V: Add arch functions to support hibernation/suspend-to-disk 2023-04-29 11:25:13 -07:00
atomic.h Merge patch series "Rework & improve riscv cmpxchg.h and atomic.h" 2024-04-28 14:50:33 -07:00
barrier.h riscv: Add Zawrs support for spinlocks 2024-07-12 03:16:42 -07:00
bitops.h riscv: Remove unnecessary int cast in variable_fls() 2024-07-10 14:30:35 -07:00
bug.h bug: Use normal relative pointers in 'struct bug_entry' 2022-05-19 23:46:10 +02:00
cache.h riscv: mm: still create swiotlb buffer for kmalloc() bouncing if required 2024-04-30 10:35:45 -07:00
cacheflush.h riscv: Fix early ftrace nop patching 2024-05-23 08:22:17 -07:00
cacheinfo.h riscv: Add cache information in AUX vector 2020-09-15 18:46:08 -07:00
cfi.h bpf, riscv64/cfi: Support kCFI + BPF on riscv64 2024-03-06 15:18:16 -08:00
checksum.h work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
clint.h RISC-V: Resurrect the MMIO timer implementation for M-mode systems 2020-09-19 13:21:11 -07:00
clocksource.h riscv: use vDSO common flow to reduce the latency of the time-related functions 2020-06-10 19:47:16 -07:00
cmpxchg.h RISC-V Patches for the 6.11 Merge Window, Part 1 2024-07-20 09:11:27 -07:00
compat.h riscv: Introduce set_compat_task() in asm/compat.h 2024-03-19 16:39:40 -07:00
cpu.h RISC-V: Add support to build the ACPI core 2023-06-01 08:45:01 -07:00
cpu_ops.h riscv: Use the same CPU operations for all CPUs 2024-01-04 15:03:07 -08:00
cpu_ops_sbi.h riscv: ensure cpu_ops_sbi is declared 2022-08-11 13:46:51 -07:00
cpufeature.h riscv: cpufeature: Extract common elements from extension checking 2024-07-22 15:36:57 -07:00
cpuidle.h RISC-V: Enable CPU_IDLE drivers 2022-03-10 09:29:21 -08:00
crash_reserve.h kexec: split crashkernel reservation code out from crash_core.c 2024-02-23 17:48:21 -08:00
csr.h RISC-V: KVM: Add perf sampling support for guests 2024-04-26 13:13:50 +05:30
current.h riscv: Rename "sp_in_global" to "current_stack_pointer" 2022-03-30 15:15:27 -07:00
delay.h
…
dma-noncoherent.h riscv: mm: dma-noncoherent: nonstandard cache operations support 2023-09-01 09:08:57 -07:00
dmi.h riscv: dmi: Add SMBIOS/DMI support 2024-06-26 08:02:33 -07:00
efi.h Merge patch series "riscv: Introduce KASLR" 2023-09-08 11:25:13 -07:00
elf.h riscv: Introduce set_compat_task() in asm/compat.h 2024-03-19 16:39:40 -07:00
entry-common.h riscv: vector: do not pass task_struct into riscv_v_vstate_{save,restore}() 2024-01-16 07:13:59 -08:00
errata_list.h RISC-V Patches for the 6.10 Merge Window, Part 1 2024-05-22 09:56:00 -07:00
extable.h riscv: mm: stub extable related functions/macros for !MMU 2023-06-14 07:17:45 -07:00
fence.h riscv/barrier: Consolidate fence definitions 2024-03-19 18:52:24 -07:00
fixmap.h riscv: Move early dtb mapping into the fixmap region 2023-04-13 18:14:26 -07:00
fpu.h riscv: add support for kernel-mode FPU 2024-05-19 14:36:19 -07:00
ftrace.h function_graph: Everyone uses HAVE_FUNCTION_GRAPH_RET_ADDR_PTR, remove it 2024-06-11 11:18:24 -04:00
futex.h riscv: extable: add a dedicated uaccess handler 2022-01-05 17:53:29 -08:00
gdb_xml.h riscv: Avoid kgdb.h including gdb_xml.h to solve unused-const-variable warning 2020-07-09 20:12:28 -07:00
gpr-num.h riscv: Add X register names to gpr-nums 2022-10-02 10:17:58 +05:30
hugetlb.h mm: provide mm_struct and address to huge_ptep_get() 2024-07-12 15:52:15 -07:00
hwcap.h riscv: Extend cpufeature.c to detect vendor extensions 2024-07-22 15:36:54 -07:00
hwprobe.h RISC-V: hwprobe: Add MISALIGNED_PERF key 2024-08-14 13:13:23 -07:00
image.h
…
insn-def.h riscv: Add Zawrs support for spinlocks 2024-07-12 03:16:42 -07:00
insn.h RISC-V: fix vector insn load/store width mask 2024-06-25 08:47:10 -07:00
io.h riscv/barrier: Consolidate fence definitions 2024-03-19 18:52:24 -07:00
irq.h init: consolidate prototypes in linux/init.h 2023-06-09 17:44:16 -07:00
irq_stack.h riscv: Deduplicate IRQ stack switching 2023-10-27 14:43:06 -07:00
irq_work.h arch: consolidate arch_irq_work_raise prototypes 2023-11-23 11:32:29 +01:00
irqflags.h riscv: Remove unnecessary irqflags processor.h include 2024-04-16 18:50:52 -07:00
jump_label.h riscv: jump_label: Simplify assembly syntax 2024-06-26 07:36:28 -07:00
kasan.h riscv: mm: Pre-allocate vmemmap/direct map/kasan PGD entries 2024-06-26 08:42:39 -07:00
kdebug.h riscv: Add KGDB support 2020-05-18 11:38:10 -07:00
kexec.h RISC-V: kexec: Fix memory leak of fdt buffer 2022-12-05 10:59:51 -08:00
kfence.h riscv: Use accessors to page table entries instead of direct dereference 2023-12-20 10:48:15 -08:00
kgdb.h riscv: Avoid kgdb.h including gdb_xml.h to solve unused-const-variable warning 2020-07-09 20:12:28 -07:00
kprobes.h riscv: Only consider swbp/ss handlers for correct privileged mode 2023-09-20 06:45:27 -07:00
kvm_aia.h RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip 2023-06-19 22:27:58 +05:30
kvm_host.h ARM: 2024-07-20 12:41:03 -07:00
kvm_types.h KVM: RISC-V: Use common KVM implementation of MMU memory caches 2022-01-06 14:38:50 +05:30
kvm_vcpu_fp.h RISC-V: KVM: Improve ISA extension by using a bitmap 2022-07-29 17:14:11 +05:30
kvm_vcpu_insn.h RISC-V: KVM: Add extensible CSR emulation framework 2022-07-29 17:14:53 +05:30
kvm_vcpu_pmu.h RISC-V: KVM: Improve firmware counter read function 2024-04-26 13:13:54 +05:30
kvm_vcpu_sbi.h RISC-V: KVM: Add support for SBI STA registers 2023-12-30 11:26:35 +05:30
kvm_vcpu_timer.h RISC-V: KVM: Fix kvm_riscv_vcpu_timer_pending() for Sstc 2022-10-21 11:52:45 +05:30
kvm_vcpu_vector.h RISC-V: KVM: Improve vector save/restore functions 2023-08-08 17:26:05 +05:30
linkage.h
…
membarrier.h membarrier: riscv: Provide core serializing command 2024-02-15 08:04:14 -08:00
mmio.h riscv/barrier: Consolidate fence definitions 2024-03-19 18:52:24 -07:00
mmiowb.h riscv/barrier: Consolidate fence definitions 2024-03-19 18:52:24 -07:00
mmu.h riscv: mm: Change attribute from __init to __meminit for page functions 2024-06-26 08:42:39 -07:00
mmu_context.h riscv: add ASID-based tlbflushing methods 2021-06-30 20:55:39 -07:00
mmzone.h riscv: Add numa support for riscv64 platform 2021-01-14 15:08:58 -08:00
module.h riscv: module: move find_section to module.h 2023-01-31 23:29:39 -08:00
module.lds.h riscv module: remove (NOLOAD) 2022-03-29 14:31:07 -07:00
numa.h riscv: Add numa support for riscv64 platform 2021-01-14 15:08:58 -08:00
page.h riscv: Extend sv39 linear mapping max size to 128G 2024-07-26 05:50:50 -07:00
paravirt.h RISC-V: paravirt: Add skeleton for pv-time support 2023-12-30 11:25:03 +05:30
paravirt_api_clock.h RISC-V: paravirt: Add skeleton for pv-time support 2023-12-30 11:25:03 +05:30
patch.h riscv: Pass patch_text() the length in bytes 2024-06-26 07:36:31 -07:00
pci.h RISC-V Patches for the 5.20 Merge Window, Part 1 2022-08-06 15:04:48 -07:00
perf_event.h riscv: perf: Fix callchain parse error with kernel tracepoint events 2023-06-01 10:09:22 -07:00
pgalloc.h riscv: Use IPIs for remote cache/TLB flushes by default 2024-04-29 10:49:26 -07:00
pgtable-32.h RISC-V: Provide pgtable_l5_enabled on rv32 2023-10-31 19:15:50 -07:00
pgtable-64.h riscv: mm: Add support for ZONE_DEVICE 2024-06-26 08:42:46 -07:00
pgtable-bits.h riscv: mm: Add support for ZONE_DEVICE 2024-06-26 08:42:46 -07:00
pgtable.h - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
probes.h riscv: Add kprobes supported 2021-01-14 15:09:06 -08:00
processor.h riscv: mm: Do not restrict mmap address based on hint 2024-08-29 06:03:29 -07:00
ptrace.h riscv: entry: Convert to generic entry 2023-03-23 08:47:00 -07:00
sbi.h riscv: Fix RISCV_ALTERNATIVE_EARLY 2024-09-03 07:57:55 -07:00
scs.h riscv: Use separate IRQ shadow call stacks 2023-10-27 14:43:09 -07:00
seccomp.h riscv: Enable seccomp architecture tracking 2020-11-20 11:16:35 -08:00
sections.h riscv: Check if the code to patch lies in the exit section 2024-01-09 10:58:59 -08:00
semihost.h riscv: Implement semihost.h for earlycon semihost driver 2023-01-19 14:58:19 +01:00
set_memory.h riscv: Prepare EFI header for relocatable kernels 2023-04-19 07:46:28 -07:00
signal32.h riscv: compat: signal: Add rt_frame implementation 2022-05-17 16:37:21 -07:00
simd.h riscv: vector: Fix a typo of preempt_v 2024-03-15 10:17:38 -07:00
smp.h riscv: Use IPIs for remote cache/TLB flushes by default 2024-04-29 10:49:26 -07:00
soc.h riscv: Fix builtin DTB handling 2021-01-07 19:00:50 -08:00
sparsemem.h riscv: Allow to dynamically define VA_BITS 2022-01-19 17:54:07 -08:00
stackprotector.h stackprotector: actually use get_random_canary() 2022-11-18 02:18:10 +01:00
stacktrace.h riscv: declare overflow_stack as exported from traps.c 2024-02-07 09:55:27 -08:00
string.h RISC-V: add infrastructure to allow different str* implementations 2023-01-31 11:43:23 -08:00
suspend.h riscv: Do not save the scratch CSR during suspend 2024-04-28 14:50:36 -07:00
switch_to.h riscv: Include riscv_set_icache_flush_ctx prctl 2024-04-18 08:10:58 -07:00
sync_core.h membarrier: riscv: Provide core serializing command 2024-02-15 08:04:14 -08:00
syscall.h riscv: Implement syscall wrappers 2023-08-23 14:16:36 -07:00
syscall_table.h riscv: convert to generic syscall table 2024-07-10 14:23:38 +02:00
syscall_wrapper.h riscv: Mark __se_sys_* functions __used 2024-03-26 14:11:03 -07:00
thread_info.h riscv: enable HAVE_ARCH_STACKLEAK 2024-07-26 05:50:47 -07:00
timex.h init: consolidate prototypes in linux/init.h 2023-06-09 17:44:16 -07:00
tlb.h RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
tlbbatch.h riscv: Add support for BATCHED_UNMAP_TLB_FLUSH 2024-01-11 08:01:53 -08:00
tlbflush.h riscv: mm: Use a fixed layout for the MM context ID 2024-04-29 10:49:33 -07:00
topology.h sched/topology: Add a new arch_scale_freq_ref() method 2023-12-23 15:52:34 +01:00
trace.h riscv: Add tracepoints for SBI calls and returns 2024-07-10 13:23:09 -07:00
uaccess.h riscv: Fix spurious errors from __get/put_kernel_nofault 2024-03-26 08:34:48 -07:00
unistd.h riscv: convert to generic syscall table 2024-07-10 14:23:38 +02:00
uprobes.h riscv: Only consider swbp/ss handlers for correct privileged mode 2023-09-20 06:45:27 -07:00
vdso.h riscv: alternative: patch alternatives in the vDSO 2023-01-31 23:29:42 -08:00
vector.h riscv: vector: adjust minimum Vector requirement to ZVE32X 2024-05-30 14:33:10 -07:00
vendor_extensions.h riscv: cpufeature: Extract common elements from extension checking 2024-07-22 15:36:57 -07:00
vendorid_list.h riscv: errata: Rename defines for Andes 2024-03-12 07:13:12 -07:00
vermagic.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
vmalloc.h Revert "riscv: mm: support Svnapot in huge vmap" 2024-02-29 10:21:22 -08:00
word-at-a-time.h kernel.h: removed REPEAT_BYTE from kernel.h 2024-02-01 09:47:59 -08:00
xip_fixup.h riscv: Fixed wrong register in XIP_FIXUP_FLASH_OFFSET macro 2024-01-09 19:33:21 -08:00
xor.h riscv: Add vector extension XOR implementation 2024-01-16 07:13:55 -08:00