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[kvm-unit-tests,v5,4/5] riscv: Add helper method to set cpu started mask

Message ID 20240921100824.151761-5-jamestiotio@gmail.com (mailing list archive)
State New, archived
Headers show
Series riscv: sbi: Add support to test HSM extension | expand

Commit Message

James Raphael Tiovalen Sept. 21, 2024, 10:08 a.m. UTC 
When a CPU abruptly stops during the RISC-V SBI hart stop tests, it is
considered to be offline. As such, it should be removed from the
cpu_started mask so that future tests can initiate another
smp_boot_secondary. Add a helper method to allow the RISC-V SBI
boot hart to remove a dead CPU from the mask.

Signed-off-by: James Raphael Tiovalen <jamestiotio@gmail.com>
---
 lib/riscv/asm/smp.h | 2 ++
 lib/riscv/smp.c     | 8 ++++++++
 2 files changed, 10 insertions(+)
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Patch

diff --git a/lib/riscv/asm/smp.h b/lib/riscv/asm/smp.h
index b3ead4e8..5d379a7a 100644
--- a/lib/riscv/asm/smp.h
+++ b/lib/riscv/asm/smp.h
@@ -26,4 +26,6 @@  secondary_func_t secondary_cinit(struct secondary_data *data);
 void smp_boot_secondary(int cpu, void (*func)(void));
 void smp_boot_secondary_nofail(int cpu, void (*func)(void));
 
+void set_cpu_started(int cpu, bool started);
+
 #endif /* _ASMRISCV_SMP_H_ */
diff --git a/lib/riscv/smp.c b/lib/riscv/smp.c
index eb7061ab..eb7cfb72 100644
--- a/lib/riscv/smp.c
+++ b/lib/riscv/smp.c
@@ -74,3 +74,11 @@  void smp_boot_secondary_nofail(int cpu, void (*func)(void))
 	while (!cpu_online(cpu))
 		smp_wait_for_event();
 }
+
+void set_cpu_started(int cpu, bool started)
+{
+	if (started)
+		cpumask_set_cpu(cpu, &cpu_started);
+	else
+		cpumask_clear_cpu(cpu, &cpu_started);
+}