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-rw-r--r--arch/riscv/kernel/cpufeature.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 17011a870044..652d102ffa06 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -57,5 +57,12 @@ void riscv_fill_hwcap(void)
for (i = 0; i < strlen(isa); ++i)
elf_hwcap |= isa2hwcap[(unsigned char)(isa[i])];
+ /* We don't support systems with F but without D, so mask those out
+ * here. */
+ if ((elf_hwcap & COMPAT_HWCAP_ISA_F) && !(elf_hwcap & COMPAT_HWCAP_ISA_D)) {
+ pr_info("This kernel does not support systems with F but not D");
+ elf_hwcap &= ~COMPAT_HWCAP_ISA_F;
+ }
+
pr_info("elf_hwcap is 0x%lx", elf_hwcap);
}
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