Declare online_cpus so that it is properly sized to have MAX_TEST_CPUS
bits. Currently, online_cpus is hardcoded to a u64, i.e. changing
MAX_TEST_CPUS to be greater than 64 will result in a variety of out of
bounds accesses.
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
lib/x86/smp.c | 2 --
x86/cstart.S | 2 +-
x86/cstart64.S | 2 +-
3 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/lib/x86/smp.c b/lib/x86/smp.c
index 30bd1a0..7b1e0e1 100644
--- a/lib/x86/smp.c
+++ b/lib/x86/smp.c
@@ -113,8 +113,6 @@ int cpus_active(void)
return atomic_read(&active_cpus);
}
-extern unsigned long long online_cpus;
-
void smp_init(void)
{
int i;
diff --git a/x86/cstart.S b/x86/cstart.S
index 575101b..76f6ba5 100644
--- a/x86/cstart.S
+++ b/x86/cstart.S
@@ -208,7 +208,7 @@ smp_init_done:
ret
online_cpus:
- .quad 0
+ .fill max_cpus / 8, 1, 0
cpu_online_count: .word 1
diff --git a/x86/cstart64.S b/x86/cstart64.S
index d4e4652..89ad9f4 100644
--- a/x86/cstart64.S
+++ b/x86/cstart64.S
@@ -282,7 +282,7 @@ idt_descr:
.quad boot_idt
online_cpus:
- .quad 0
+ .fill max_cpus / 8, 1, 0
load_tss:
lidtq idt_descr
--
2.22.0
