tile: don't assume user privilege is zero
Technically, user privilege is anything less than kernel
privilege. We modify the existing user_mode() macro to have
this semantic (and use it in a couple of places it wasn't being
used before), and add an IS_KERNEL_EX1() macro to the assembly
code as well.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c
index 64eec3f..39c48cb 100644
--- a/arch/tile/mm/fault.c
+++ b/arch/tile/mm/fault.c
@@ -283,7 +283,7 @@
flags = (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
(write ? FAULT_FLAG_WRITE : 0));
- is_kernel_mode = (EX1_PL(regs->ex1) != USER_PL);
+ is_kernel_mode = !user_mode(regs);
tsk = validate_current();
@@ -824,7 +824,7 @@
}
#if CHIP_HAS_TILE_DMA() || CHIP_HAS_SN_PROC()
- if (EX1_PL(regs->ex1) != USER_PL) {
+ if (!user_mode(regs)) {
struct async_tlb *async;
switch (fault_num) {
#if CHIP_HAS_TILE_DMA()