summaryrefslogtreecommitdiff
path: root/arch/riscv
diff options
context:
space:
mode:
authorJisheng Zhang <jszhang@kernel.org>2021-03-30 02:23:54 +0800
committerPalmer Dabbelt <palmerdabbelt@google.com>2021-04-26 08:25:10 -0700
commit300f62c37d4601e5b7967c6399917dc6880070bc (patch)
tree53b10298134de2e7faa35d57d269d85cda8ca8e6 /arch/riscv
parente6a302248cec96c3af4cbfcedc44b0de8a26ebe0 (diff)
riscv: Constify sbi_ipi_ops
Constify the sbi_ipi_ops so that it will be placed in the .rodata section. This will cause attempts to modify it to fail when strict page permissions are in place. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/include/asm/smp.h4
-rw-r--r--arch/riscv/kernel/sbi.c2
-rw-r--r--arch/riscv/kernel/smp.c4
3 files changed, 5 insertions, 5 deletions
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h
index df1f7c4cd433..a7d2811f3536 100644
--- a/arch/riscv/include/asm/smp.h
+++ b/arch/riscv/include/asm/smp.h
@@ -46,7 +46,7 @@ int riscv_hartid_to_cpuid(int hartid);
void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out);
/* Set custom IPI operations */
-void riscv_set_ipi_ops(struct riscv_ipi_ops *ops);
+void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops);
/* Clear IPI for current CPU */
void riscv_clear_ipi(void);
@@ -92,7 +92,7 @@ static inline void riscv_cpuid_to_hartid_mask(const struct cpumask *in,
cpumask_set_cpu(boot_cpu_hartid, out);
}
-static inline void riscv_set_ipi_ops(struct riscv_ipi_ops *ops)
+static inline void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
{
}
diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
index a404d648ef79..38f94926f2ee 100644
--- a/arch/riscv/kernel/sbi.c
+++ b/arch/riscv/kernel/sbi.c
@@ -571,7 +571,7 @@ static void sbi_send_cpumask_ipi(const struct cpumask *target)
sbi_send_ipi(cpumask_bits(&hartid_mask));
}
-static struct riscv_ipi_ops sbi_ipi_ops = {
+static const struct riscv_ipi_ops sbi_ipi_ops = {
.ipi_inject = sbi_send_cpumask_ipi
};
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 476e2e4bc5c5..366cb87c0e2e 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -87,9 +87,9 @@ static void ipi_stop(void)
wait_for_interrupt();
}
-static struct riscv_ipi_ops *ipi_ops __ro_after_init;
+static const struct riscv_ipi_ops *ipi_ops __ro_after_init;
-void riscv_set_ipi_ops(struct riscv_ipi_ops *ops)
+void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
{
ipi_ops = ops;
}