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smp: Guard CPU indexes > MAX_CPUS

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2022-03-14 21:08:07 +09:00
parent be1421d2ad
commit d580963043
1 changed files with 21 additions and 0 deletions
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21
src/smp.c
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@ -73,6 +73,9 @@ static void smp_start_cpu(int index, int cluster, int core, u64 rvbar, u64 cpu_s
{
int i;
if (index >= MAX_CPUS)
return;
if (spin_table[index].flag)
return;
@ -171,12 +174,18 @@ void smp_start_secondaries(void)
void smp_send_ipi(int cpu)
{
if (cpu >= MAX_CPUS)
return;
u64 mpidr = spin_table[cpu].mpidr;
msr(SYS_IMP_APL_IPI_RR_GLOBAL_EL1, (mpidr & 0xff) | ((mpidr & 0xff00) << 8));
}
void smp_call4(int cpu, void *func, u64 arg0, u64 arg1, u64 arg2, u64 arg3)
{
if (cpu >= MAX_CPUS)
return;
struct spin_table *target = &spin_table[cpu];
if (cpu == 0)
@ -202,6 +211,9 @@ void smp_call4(int cpu, void *func, u64 arg0, u64 arg1, u64 arg2, u64 arg3)
u64 smp_wait(int cpu)
{
if (cpu >= MAX_CPUS)
return 0;
struct spin_table *target = &spin_table[cpu];
while (target->target)
@ -224,11 +236,17 @@ void smp_set_wfe_mode(bool new_mode)
bool smp_is_alive(int cpu)
{
if (cpu >= MAX_CPUS)
return false;
return spin_table[cpu].flag;
}
uint64_t smp_get_mpidr(int cpu)
{
if (cpu >= MAX_CPUS)
return 0;
return spin_table[cpu].mpidr;
}
@ -236,6 +254,9 @@ u64 smp_get_release_addr(int cpu)
{
struct spin_table *target = &spin_table[cpu];
if (cpu >= MAX_CPUS)
return 0;
target->args[0] = 0;
target->args[1] = 0;
target->args[2] = 0;