git: bbe97db3c211 - main - arm64/vmm: Add the VHE exception and switcher files

The branch main has been updated by andrew:

URL: https://cgit.FreeBSD.org/src/commit/?id=bbe97db3c211bd0a89a5b9c1a58857625b763475

commit bbe97db3c211bd0a89a5b9c1a58857625b763475
Author:     Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2024-08-19 12:44:31 +0000
Commit:     Andrew Turner <andrew@FreeBSD.org>
CommitDate: 2024-08-20 08:49:16 +0000

    arm64/vmm: Add the VHE exception and switcher files
    
    These just need to include the common code with macros to ensure it is
    built correctly.
    
    Sponsored by:   Arm Ltd
    Differential Revision:  https://reviews.freebsd.org/D46083
---
 sys/arm64/vmm/vmm_vhe.c           | 39 +++++++++++++++++++++++++++++++++++++++
 sys/arm64/vmm/vmm_vhe_exception.S | 31 +++++++++++++++++++++++++++++++
 sys/conf/files.arm64              |  2 ++
 sys/modules/vmm/Makefile          |  2 ++
 4 files changed, 74 insertions(+)

diff --git a/sys/arm64/vmm/vmm_vhe.c b/sys/arm64/vmm/vmm_vhe.c
new file mode 100644
index 000000000000..8a12852e2a7a
--- /dev/null
+++ b/sys/arm64/vmm/vmm_vhe.c
@@ -0,0 +1,39 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 Arm Ltd
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "vmm_handlers.h"
+
+#define	VMM_VHE
+
+#define	VMM_STATIC
+#define	VMM_HYP_FUNC(func)	vmm_vhe_ ## func
+
+#define	guest_or_nonvhe(guest)	(guest)
+#define	EL1_REG(reg)		MRS_REG_ALT_NAME(reg ## _EL12)
+#define	EL0_REG(reg)		MRS_REG_ALT_NAME(reg ## _EL02)
+
+#include "vmm_hyp.c"
diff --git a/sys/arm64/vmm/vmm_vhe_exception.S b/sys/arm64/vmm/vmm_vhe_exception.S
new file mode 100644
index 000000000000..286f5df03707
--- /dev/null
+++ b/sys/arm64/vmm/vmm_vhe_exception.S
@@ -0,0 +1,31 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 Arm Ltd
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define VMM_VHE
+#define	VMM_HYP_FUNC(func)	vmm_vhe_ ## func
+
+#include "vmm_hyp_exception.S"
diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64
index b522177221e5..b105ce873d24 100644
--- a/sys/conf/files.arm64
+++ b/sys/conf/files.arm64
@@ -145,6 +145,8 @@ vmm_hyp_blob.bin				optional vmm		\
 arm64/vmm/vmm_hyp_el2.S				optional vmm		\
 	dependency	vmm_hyp_blob.bin
 arm64/vmm/vmm_mmu.c				optional vmm
+arm64/vmm/vmm_vhe.c				optional vmm
+arm64/vmm/vmm_vhe_exception.S			optional vmm
 arm64/vmm/io/vgic.c				optional vmm
 arm64/vmm/io/vgic_v3.c				optional vmm
 arm64/vmm/io/vgic_if.m				optional vmm
diff --git a/sys/modules/vmm/Makefile b/sys/modules/vmm/Makefile
index a3a878a653ff..0604a34690e5 100644
--- a/sys/modules/vmm/Makefile
+++ b/sys/modules/vmm/Makefile
@@ -30,6 +30,8 @@ SRCS+=	vmm_arm64.c \
 	vmm_call.S \
 	vmm_handlers.c \
 	vmm_mmu.c \
+	vmm_vhe_exception.S \
+	vmm_vhe.c \
 	vmm_hyp_el2.S
 
 .PATH: ${SRCTOP}/sys/${MACHINE}/vmm/io