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Atish Patra 5b305e30a5 lib: sbi: Only enable TM bit in scounteren 
The S-mode should disable Cycle and instruction counter for user space
to avoid side channel attacks. The Linux kernel already does this so that
any random user space code shouldn't be able to monitor cycle/instruction
without higher privilege mode involvement.

Remove the CY/IR bits in scountern in OpenSBI.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20250513-fix_scounteren-v1-1-01018e0c0b0a@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
2025-07-21 16:33:03 +05:30
..
tests
lib: tests: add bitwise operations unit tests
2025-03-23 21:06:25 +05:30
Kconfig
lib: sbi: Implement SBI MPXY extension
2024-12-06 09:26:52 +05:30
objects.mk
lib: Emulate AMO instructions when Zaamo is not available
2025-05-20 09:18:03 +05:30
riscv_asm.c
lib: sbi: check result of pmp_get() in is_pmp_entry_mapped()
2024-08-02 08:45:10 +05:30
riscv_atomic.c
lib: Emit lr and sc instructions based on -march flags
2025-03-28 18:52:05 +05:30
riscv_hardfp.S
lib: Move sbi core library to lib/sbi
2019-06-19 09:48:51 +05:30
riscv_locks.c
lib: Emit lr and sc instructions based on -march flags
2025-03-28 18:52:05 +05:30
sbi_bitmap.c
lib: Simple bitmap library
2020-03-11 15:29:45 +05:30
sbi_bitops.c
lib: fix compilation when strings.h is included
2022-02-04 11:04:19 +05:30
sbi_console.c
lib: sbi: Introduce an early console buffer for caching early prints
2024-07-24 12:18:41 +05:30
sbi_cppc.c
lib: sbi: Implement SBI CPPC extension
2023-04-07 09:36:01 +05:30
sbi_dbtr.c
lib: sbi: dbtr: Fix update_triggers to match SBI
2025-06-16 17:01:52 +05:30
sbi_domain_context.c
lib: sbi_platform: Add platform specific pmp_set() and pmp_disable()
2025-06-17 09:34:01 +05:30
sbi_domain_data.c
lib: sbi: Introduce domain data
2024-10-25 23:00:07 +05:30
sbi_domain.c
lib: sbi: Use sbi_hart_count() and sbi_for_each_hartindex()
2025-03-24 17:57:20 +05:30
sbi_double_trap.c
lib: sbi: sse: allow adding new events
2025-01-30 10:40:49 +05:30
sbi_ecall_base.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_cppc.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_dbcn.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_dbtr.c
lib: sbi: dbtr: Fix update_triggers to match SBI
2025-06-16 17:01:52 +05:30
sbi_ecall_exts.carray
lib: sbi_ecall: Generate extensions list with carray
2022-10-23 11:00:30 +05:30
sbi_ecall_fwft.c
include: sbi: Change SBI spec version to 3.0
2025-05-20 13:47:34 +05:30
sbi_ecall_hsm.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_ipi.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_legacy.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_mpxy.c
include: sbi: Change SBI spec version to 3.0
2025-05-20 13:47:34 +05:30
sbi_ecall_pmu.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_rfence.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_srst.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_sse.c
include: sbi: Change SBI spec version to 3.0
2025-05-20 13:47:34 +05:30
sbi_ecall_susp.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_time.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall_vendor.c
lib: sbi: Print list of available SBI extensions at boot-time
2024-12-22 11:16:13 +05:30
sbi_ecall.c
lib: sbi: Remove unnecessary SBI_INIT_LIST_HEAD
2025-04-15 11:38:20 +05:30
sbi_emulate_csr.c
lib: sbi: factorize previous mode computation
2024-10-25 23:53:18 +05:30
sbi_expected_trap.S
lib: sbi: Remove epc from struct sbi_trap_info
2024-03-19 11:31:16 +05:30
sbi_fifo.c
lib: sbi: Allow forceful queueing of data in sbi_fifo_enqueue()
2024-07-24 12:18:36 +05:30
sbi_fwft.c
lib: sbi: fwft: Use only the provided PMLEN value
2025-06-15 18:56:33 +05:30
sbi_hart.c
lib: sbi: Only enable TM bit in scounteren
2025-07-21 16:33:03 +05:30
sbi_heap.c
lib: sbi: Remove unnecessary SBI_INIT_LIST_HEAD
2025-04-15 11:38:20 +05:30
sbi_hfence.S
lib: sbi: Fix GPA passed to __sbi_hfence_gvma_xyz() functions
2021-11-02 16:02:08 +05:30
sbi_hsm.c
lib: sbi: Revert entry_count before doing hsm stop in hsm wait loop
2025-06-16 09:40:28 +05:30
sbi_illegal_atomic.c
lib: sbi: Remove redundant call to sbi_hart_expected_trap_addr()
2025-07-20 20:54:34 +05:30
sbi_illegal_insn.c
lib: Emulate AMO instructions when Zaamo is not available
2025-05-20 09:18:03 +05:30
sbi_init.c
lib: sbi: Revert entry_count before doing hsm stop in hsm wait loop
2025-06-16 09:40:28 +05:30
sbi_ipi.c
lib: sbi_ipi: Return error for invalid hartids
2025-04-14 15:29:36 +05:30
sbi_irqchip.c
lib: sbi_irqchip: Set the IRQ handler when registering a chip
2024-11-28 11:51:56 +05:30
sbi_math.c
lib: Create a separate math helper function file
2020-05-10 09:59:24 +05:30
sbi_mpxy.c
lib: sbi_mpxy: Change MPXY state as per-domain data
2025-04-21 11:35:44 +05:30
sbi_platform.c
lib: sbi: Remove sbi_platform_hart_index/invalid() functions
2023-09-24 11:39:30 +05:30
sbi_pmu.c
lib: sbi: pmu: Remove MIP clearing from pmu_sse_enable()
2025-06-15 18:44:51 +05:30
sbi_scratch.c
lib: sbi: Set the scratch allocation to alignment to cacheline size
2025-04-24 09:23:47 +05:30
sbi_sse.c
lib: sbi: sse: Add support for SSTATUS.SDT
2025-03-27 18:16:44 +05:30
sbi_string.c
lib: sbi: Fix potential garbage data in string copy functions
2025-03-23 18:38:57 +05:30
sbi_system.c
lib: sbi: factorize previous mode computation
2024-10-25 23:53:18 +05:30
sbi_timer.c
lib: sbi: hart: Detect existence of cycle and instret CSRs for Zicntr
2025-05-20 13:25:53 +05:30
sbi_tlb.c
lib: sbi: Allow forceful queueing of data in sbi_fifo_enqueue()
2024-07-24 12:18:36 +05:30
sbi_trap_ldst.c
lib: sbi_misaligned_ldst: Add handling of vector load/store
2024-12-06 17:43:06 +05:30
sbi_trap_v_ldst.c
Makefile: Don't enable V-extension using -march option
2024-12-15 11:30:48 +05:30
sbi_trap.c
lib: sbi_trap: Add support for vectored interrupts
2025-04-13 05:51:17 +05:30
sbi_unpriv.c
lib: sbi: Remove redundant call to sbi_hart_expected_trap_addr()
2025-07-20 20:54:34 +05:30