[v3,07/15] arm64/mm: Introduce NUM_ASIDS

Message ID 20190724162534.7390-8-julien.grall@arm.com
State New
Headers show
Series
  • kvm/arm: Align the VMID allocation with the arm64 ASID one
Related show

Commit Message

Julien Grall July 24, 2019, 4:25 p.m.
At the moment ASID_FIRST_VERSION is used to know the number of ASIDs
supported. As we are going to move the ASID allocator in a separate, it
would be better to use a different name for external users.

This patch adds NUM_ASIDS and implements ASID_FIRST_VERSION using it.

Signed-off-by: Julien Grall <julien.grall@arm.com>

---
 arch/arm64/mm/context.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

-- 
2.11.0

Patch

diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index 2e1e495cd1d8..3b40ac4a2541 100644
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -37,7 +37,9 @@  static DEFINE_PER_CPU(atomic64_t, active_asids);
 static DEFINE_PER_CPU(u64, reserved_asids);
 
 #define ASID_MASK(info)			(~GENMASK((info)->bits - 1, 0))
-#define ASID_FIRST_VERSION(info)	(1UL << ((info)->bits))
+#define NUM_ASIDS(info)			(1UL << ((info)->bits))
+
+#define ASID_FIRST_VERSION(info)	NUM_ASIDS(info)
 
 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0
 #define ASID_PER_CONTEXT		2
@@ -45,7 +47,7 @@  static DEFINE_PER_CPU(u64, reserved_asids);
 #define ASID_PER_CONTEXT		1
 #endif
 
-#define NUM_CTXT_ASIDS(info)		(ASID_FIRST_VERSION(info) >> (info)->ctxt_shift)
+#define NUM_CTXT_ASIDS(info)		(NUM_ASIDS(info) >> (info)->ctxt_shift)
 #define asid2idx(info, asid)		(((asid) & ~ASID_MASK(info)) >> (info)->ctxt_shift)
 #define idx2asid(info, idx)		(((idx) << (info)->ctxt_shift) & ~ASID_MASK(info))