[PATCH v4 26/28] ARM: hyp-stub/KVM: Kill __hyp_get_vectors

Marc Zyngier
2017-03-21T19:20:56Z

Nobody is using __hyp_get_vectors anymore, so let's remove both
implementations (hyp-stub and KVM).

Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm/include/asm/virt.h | 10 ++++------
arch/arm/kernel/hyp-stub.S | 13 +------------
arch/arm/kvm/init.S | 7 +------
arch/arm/kvm/interrupts.S | 4 ----
4 files changed, 6 insertions(+), 28 deletions(-)

diff --git a/arch/arm/include/asm/virt.h b/arch/arm/include/asm/virt.h
index 8d5625b790b5..5f45969d4063 100644
--- a/arch/arm/include/asm/virt.h
+++ b/arch/arm/include/asm/virt.h
@@ -53,7 +53,6 @@ static inline void sync_boot_mode(void)
}

void __hyp_set_vectors(unsigned long phys_vector_base);
-unsigned long __hyp_get_vectors(void);
void __hyp_reset_vectors(void);
#else
#define __boot_cpu_mode (SVC_MODE)
@@ -99,12 +98,11 @@ extern char __hyp_text_end[];

/* Only assembly code should need those */

-#define HVC_GET_VECTORS 0
-#define HVC_SET_VECTORS 1
-#define HVC_SOFT_RESTART 2
-#define HVC_RESET_VECTORS 3
+#define HVC_SET_VECTORS 0
+#define HVC_SOFT_RESTART 1
+#define HVC_RESET_VECTORS 2

-#define HVC_STUB_HCALL_NR 4
+#define HVC_STUB_HCALL_NR 3

#endif /* __ASSEMBLY__ */

diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S
index 3cb01e8a291d..68bf72777ac7 100644
--- a/arch/arm/kernel/hyp-stub.S
+++ b/arch/arm/kernel/hyp-stub.S
@@ -202,12 +202,7 @@ ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE
ENDPROC(__hyp_stub_install_secondary)

__hyp_stub_do_trap:
- teq r0, #HVC_GET_VECTORS
- bne 1f
- mrc p15, 4, r0, c12, c0, 0 @ get HVBAR
- b __hyp_stub_exit
-
-1: teq r0, #HVC_SET_VECTORS
+ teq r0, #HVC_SET_VECTORS
bne 1f
mcr p15, 4, r1, c12, c0, 0 @ set HVBAR
b __hyp_stub_exit
@@ -247,12 +242,6 @@ ENDPROC(__hyp_stub_do_trap)
* so you will need to set that to something sensible at the new hypervisor's
* initialisation entry point.
*/
-ENTRY(__hyp_get_vectors)
- mov r0, #HVC_GET_VECTORS
- __HVC(0)
- ret lr
-ENDPROC(__hyp_get_vectors)
-
ENTRY(__hyp_set_vectors)
mov r1, r0
mov r0, #HVC_SET_VECTORS
diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S
index c92e092103b2..3cff15152800 100644
--- a/arch/arm/kvm/init.S
+++ b/arch/arm/kvm/init.S
@@ -122,12 +122,7 @@ __do_hyp_init:
eret

ENTRY(__kvm_handle_stub_hvc)
- cmp r0, #HVC_GET_VECTORS
- bne 1f
- mrc p15, 4, r0, c12, c0, 0 @ get HVBAR
- b exit
-
-1: cmp r0, #HVC_SOFT_RESTART
+ cmp r0, #HVC_SOFT_RESTART
bne 1f

/* The target is expected in r1 */
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index b1bd316f14c0..80a1d6cd261c 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -37,10 +37,6 @@
* in Hyp mode (see init_hyp_mode in arch/arm/kvm/arm.c). Return values are
* passed in r0 (strictly 32bit).
*
- * A function pointer with a value of 0xffffffff has a special meaning,
- * and is used to implement __hyp_get_vectors in the same way as in
- * arch/arm/kernel/hyp_stub.S.
- *
* The calling convention follows the standard AAPCS:
* r0 - r3: caller save
* r12: caller save
--
2.11.0