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Jinjie Ruan 21ada6915c riscv: Fix fp alignment bug in perf_callchain_user() 
[ Upstream commit 22ab08955e ]

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: dbeb90b0c1 ("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>
History 2024-10-04 16:29:34 +02:00
..
boot riscv: dts: starfive: add assigned-clock* to limit frquency 2024-09-18 19:24:10 +02:00
configs Kbuild updates for v6.6 2023-09-05 11:01:47 -07:00
errata riscv: errata: andes: Probe for IOCP only once in boot stage 2023-12-13 18:45:19 +01:00
include RISC-V: KVM: Fix to allow hpmcounter31 from the guest 2024-10-04 16:28:51 +02:00
kernel riscv: Fix fp alignment bug in perf_callchain_user() 2024-10-04 16:29:34 +02:00
kvm RISC-V: KVM: Fix sbiret init before forwarding to userspace 2024-10-04 16:28:51 +02:00
lib riscv: uaccess: Return the number of bytes effectively not copied 2023-08-16 07:30:06 -07:00
mm membarrier: riscv: Add full memory barrier in switch_mm() 2024-09-12 11:11:45 +02:00
net riscv, bpf: make some atomic operations fully ordered 2024-06-12 11:11:54 +02:00
purgatory riscv/purgatory: Disable CFI 2023-08-23 14:16:40 -07:00
tools riscv: Check relocations at compile time 2023-04-19 07:46:32 -07:00
Kbuild kexec: rename ARCH_HAS_KEXEC_PURGATORY 2023-08-18 10:18:54 -07:00
Kconfig membarrier: riscv: Add full memory barrier in switch_mm() 2024-09-12 11:11:45 +02:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.errata riscv: only select DMA_DIRECT_REMAP from RISCV_ISA_ZICBOM and ERRATA_THEAD_PBMT 2023-10-26 09:42:38 +02:00
Kconfig.socs riscv: Kconfig: Add select ARM_AMBA to SOC_STARFIVE 2023-12-13 18:45:35 +01:00
Makefile kbuild: unify vdso_install rules 2024-06-12 11:12:32 +02:00
Makefile.postlink riscv: Use --emit-relocs in order to move .rela.dyn in init 2023-04-19 07:46:33 -07:00