[SPARC64]: Bulletproof hypervisor TLB flushing.

Check TLB flush hypervisor calls for errors and report them.

Pass HV_MMU_ALL always for now, we can add back the optimization
to avoid the I-TLB flush later.

Always explicitly page align the virtual address arguments.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 8df0cf29e3eb..043a72658f6a 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1968,6 +1968,18 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
         prom_halt();
 }
 
+void hypervisor_tlbop_error(unsigned long err, unsigned long op)
+{
+        printk(KERN_CRIT "SUN4V: TLB hv call error %lu for op %lu\n",
+               err, op);
+}
+
+void hypervisor_tlbop_error_xcall(unsigned long err, unsigned long op)
+{
+        printk(KERN_CRIT "SUN4V: XCALL TLB hv call error %lu for op %lu\n",
+               err, op);
+}
+
 void do_fpe_common(struct pt_regs *regs)
 {
         if (regs->tstate & TSTATE_PRIV) {