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linux/arch/riscv
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Anup Patel 9bcafbd270 RISC-V: KVM: Don't treat SBI HFENCE calls as NOPs 
[ Upstream commit 2e7be16299 ]

The SBI specification clearly states that SBI HFENCE calls should
return SBI_ERR_NOT_SUPPORTED when one of the target hart doesn’t
support hypervisor extension (aka nested virtualization in-case
of KVM RISC-V).

Fixes: c7fa3c48de ("RISC-V: KVM: Treat SBI HFENCE calls as NOPs")
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20250605061458.196003-3-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-27 11:07:41 +01:00
..
boot riscv: dts: sifive: add missing #interrupt-cells to pmic 2024-03-26 18:20:25 -04:00
configs riscv: enable CD-ROM file systems in defconfig 2022-08-25 17:01:09 -07:00
errata RISC-V: fix taking the text_mutex twice during sifive errata patching 2023-05-17 11:53:41 +02:00
include riscv: mm: Fix the out of bound issue of vmemmap address 2025-05-22 14:10:09 +02:00
kernel riscv: KGDB: Remove ".option norvc/.option rvc" for kgdb_compiled_break 2025-04-25 10:43:51 +02:00
kvm RISC-V: KVM: Don't treat SBI HFENCE calls as NOPs 2025-06-27 11:07:41 +01:00
lib riscv: uaccess: Return the number of bytes effectively not copied 2023-08-23 17:52:38 +02:00
mm riscv: mm: Fix the out of bound issue of vmemmap address 2025-05-22 14:10:09 +02:00
net riscv, bpf: Make BPF_CMPXCHG fully ordered 2024-11-01 01:56:01 +01:00
purgatory riscv/purgatory: align riscv_kernel_entry 2024-11-14 13:15:17 +01:00
Kbuild riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild 2022-06-01 22:26:32 -07:00
Kconfig riscv: define ILLEGAL_POINTER_VALUE for 64bit 2024-10-17 15:21:57 +02:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.erratas riscv: make t-head erratas depend on MMU 2022-09-17 01:48:22 -07:00
Kconfig.socs riscv: Kconfig: Add select ARM_AMBA to SOC_STARFIVE 2023-12-13 18:39:29 +01:00
Makefile riscv: Handle zicsr/zifencei issues between clang and binutils 2023-03-30 12:49:28 +02:00