linux-kernel - [PATCH] RISC-V: KVM: fix _

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Message-Id: <20260106162848.22866-1-ben.dooks@codethink.co.uk>
Date: Tue,  6 Jan 2026 16:28:48 +0000
From: Ben Dooks <ben.dooks@...ethink.co.uk>
To: linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	kvm-riscv@...ts.infradead.org
Cc: kvm@...r.kernel.org,
	palmer@...belt.com,
	pjw@...nel.org,
	anup@...infault.org,
	atish.patra@...ux.dev,
	Ben Dooks <ben.dooks@...ethink.co.uk>
Subject: [PATCH] RISC-V: KVM: fix __le64 type assignments

The two swaps from le32/le64 in arch/riscv/include/asm/kvm_nacl.h
are generating a number of type assingment warnings in sparse, so
fix by using __force and assuming the code is correct.

Fixes a number of:

arch/riscv/kvm/vcpu.c:371:21: warning: cast to restricted __le64
arch/riscv/kvm/vcpu.c:374:16: warning: cast to restricted __le64
arch/riscv/kvm/vcpu.c:586:17: warning: incorrect type in assignment (different base types)
arch/riscv/kvm/vcpu.c:586:17:    expected unsigned long
arch/riscv/kvm/vcpu.c:586:17:    got restricted __le64 [usertype]

Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
---
 arch/riscv/include/asm/kvm_nacl.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/riscv/include/asm/kvm_nacl.h b/arch/riscv/include/asm/kvm_nacl.h
index 4124d5e06a0f..2483738029cb 100644
--- a/arch/riscv/include/asm/kvm_nacl.h
+++ b/arch/riscv/include/asm/kvm_nacl.h
@@ -58,11 +58,11 @@ void kvm_riscv_nacl_exit(void);
 int kvm_riscv_nacl_init(void);
 
 #ifdef CONFIG_32BIT
-#define lelong_to_cpu(__x)	le32_to_cpu(__x)
-#define cpu_to_lelong(__x)	cpu_to_le32(__x)
+#define lelong_to_cpu(__x)	le32_to_cpu((__force __le32)__x)
+#define cpu_to_lelong(__x)	(__force unsigned long)cpu_to_le32(__x)
 #else
-#define lelong_to_cpu(__x)	le64_to_cpu(__x)
-#define cpu_to_lelong(__x)	cpu_to_le64(__x)
+#define lelong_to_cpu(__x)	le64_to_cpu((__force __le64)__x)
+#define cpu_to_lelong(__x)	(__force unsigned long)cpu_to_le64(__x)
 #endif
 
 #define nacl_shmem()							\
-- 
2.37.2.352.g3c44437643