All d-cache entries related to memory that a new cell will use or that
a destructed cell was using are irrelevant now. Invalidate them so that
nothing leaks from/to other cells.
CC: Marc Zyngier <marc.zyng...@arm.com>
CC: Mark Rutland <mark.rutl...@arm.com>
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
hypervisor/arch/arm/control.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/hypervisor/arch/arm/control.c b/hypervisor/arch/arm/control.c
index f9e117d..83add4c 100644
--- a/hypervisor/arch/arm/control.c
+++ b/hypervisor/arch/arm/control.c
@@ -378,6 +378,12 @@ void arch_flush_cell_vcpu_caches(struct cell *cell)
void arch_config_commit(struct cell *cell_added_removed)
{
+ /*
+ * We only need to flush caches for non-root cells and can ignore this
+ * call when being invoked during setup on the root cell.
+ */
+ if (cell_added_removed && cell_added_removed != &root_cell)
+ arm_cell_dcaches_flush(cell_added_removed, DCACHE_INVALIDATE);
}
void __attribute__((noreturn)) arch_panic_stop(void)
--
2.1.4
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