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Jinjie Ruan 82b35b5043 riscv: Fix fp alignment bug in perf_callchain_user() 
[ Upstream commit 22ab08955ea13be04a8efd20cc30890e0afaa49c ]

The standard RISC-V calling convention said:
	"The stack grows downward and the stack pointer is always
	kept 16-byte aligned".

So perf_callchain_user() should check whether 16-byte aligned for fp.

Link: https://riscv.org/wp-content/uploads/2015/01/riscv-calling.pdf

Fixes: dbeb90b0c1eb ("riscv: Add perf callchain support")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Cc: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20240708032847.2998158-2-ruanjinjie@huawei.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:21:26 +01:00
..
boot Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
configs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
include riscv: Fix TASK_SIZE on 64-bit NOMMU 2024-11-19 11:32:40 +01:00
kernel riscv: Fix fp alignment bug in perf_callchain_user() 2024-11-23 23:21:26 +01:00
lib Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mm riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error() 2024-11-23 23:20:20 +01:00
net riscv, bpf: Sign-extend return values 2024-11-08 11:25:45 +01:00
Kbuild Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig riscv: Disable STACKPROTECTOR_PER_TASK if GCC_PLUGIN_RANDSTRUCT is enabled 2024-11-19 11:32:40 +01:00
Kconfig.debug Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig.socs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile riscv: Enable per-task stack canaries 2024-11-19 11:32:21 +01:00