[RFC,XEN,13/23] riscv: Add smp.c

Commit Message

Bobby Eshleman Jan. 22, 2020, 1:58 a.m. UTC

From: Alistair Francis <[e-mail]>

Signed-off-by: Alistair Francis <[e-mail]>
---
 xen/arch/riscv/smp.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 xen/arch/riscv/smp.c

Patch

diff --git a/xen/arch/riscv/smp.c b/xen/arch/riscv/smp.c
new file mode 100644
index 0000000000..735da22cd2
--- /dev/null
+++ b/xen/arch/riscv/smp.c
@@ -0,0 +1,41 @@ 
+#include <xen/mm.h>
+#include <xen/smp.h>
+#include <asm/system.h>
+#include <asm/smp.h>
+#include <asm/page.h>
+#include <asm/flushtlb.h>
+
+volatile unsigned long start_secondary_pen_release = HARTID_INVALID;
+
+void flush_tlb_mask(const cpumask_t *mask)
+{
+    flush_all_guests_tlb();
+}
+
+void smp_send_event_check_mask(const cpumask_t *mask)
+{
+    /* TODO */
+}
+
+void smp_send_call_function_mask(const cpumask_t *mask)
+{
+    cpumask_t target_mask;
+
+    cpumask_andnot(&target_mask, mask, cpumask_of(smp_processor_id()));
+
+    if ( cpumask_test_cpu(smp_processor_id(), mask) )
+    {
+        local_irq_disable();
+        smp_call_function_interrupt();
+        local_irq_enable();
+    }
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */