Heiko Stuebner 1771c8c9e6 riscv: remove usage of function-pointers from cpufeatures and t-head errata ... Having a list of alternatives to check with a per-entry function pointer to a check function is nice style-wise. But in case of early-alternatives it can clash with the non-relocated kernel and the function pointer in the list pointing to a completely wrong location. This isn't an issue with one or two list entries, as in that case the compiler seems to unroll the loop and even usage of the list structure and then only does relative jumps into the check functions based on this. When adding a third entry to either list though, the issue that was hiding there from the beginning is triggered resulting a jump to a memory address that isn't part of the kernel at all. The list of features/erratas only contained an unused name and the pointer to the check function, so an easy solution for the problem is to just unroll the loop in code, dismantle the whole list structure and just call the relevant check functions one by one ourself. For the T-Head errata this includes moving the stage-check inside the check functions. The issue is only relevant for things that might be called for early- alternatives (T-Head and possible future main extensions), so the SiFive erratas were not affected from the beginning, as they got an early return for early-alternatives in the original patchset. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Samuel Holland <samuel@sholland.org> Link: https://lore.kernel.org/r/20220526205646.258337-6-heiko@sntech.de Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2022-06-16 15:47:41 -07:00
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boot	riscv: dts: icicle: sort nodes alphabetically	2022-06-01 15:28:51 -07:00
configs	RISC-V: configs: Configs that had RPMSG_CHAR now get RPMSG_CTRL	2022-04-26 08:19:53 -07:00
errata	riscv: remove usage of function-pointers from cpufeatures and t-head errata	2022-06-16 15:47:41 -07:00
include	riscv: Move alternative length validation into subsection	2022-06-02 15:55:22 -07:00
kernel	riscv: remove usage of function-pointers from cpufeatures and t-head errata	2022-06-16 15:47:41 -07:00
kvm	RISC-V: KVM: Introduce ISA extension register	2022-05-20 09:09:20 +05:30
lib	riscv: Fixed misaligned memory access. Fixed pointer comparison.	2022-03-10 10:24:04 -08:00
mm	riscv: mm: init: make pt_ops_set_[early|late|fixmap] static	2022-06-02 14:50:41 -07:00
net	riscv, bpf: Implement more atomic operations for RV64	2022-04-11 16:54:54 +02:00
purgatory	RISC-V: Add purgatory	2022-05-19 12:18:59 -07:00
Kbuild	riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild	2022-06-01 22:26:32 -07:00
Kconfig	riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol	2022-06-16 15:47:39 -07:00
Kconfig.debug	RISC-V: Remove EARLY_PRINTK support	2018-12-17 10:23:46 -08:00
Kconfig.erratas	riscv: fix dependency for t-head errata	2022-06-16 15:42:55 -07:00
Kconfig.socs	RISC-V Patches for the 5.19 Merge Window, Part 1	2022-05-31 14:10:54 -07:00
Makefile	riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild	2022-06-01 22:26:32 -07:00