From: Oleksii Kurochko <oleksii.kurochko@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Jan Beulich <jbeulich@suse.com>, Julien Grall <julien@xen.org>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Gianluca Guida <gianluca@rivosinc.com>,
Oleksii Kurochko <oleksii.kurochko@gmail.com>,
Bob Eshleman <bobbyeshleman@gmail.com>,
Alistair Francis <alistair.francis@wdc.com>,
Connor Davis <connojdavis@gmail.com>
Subject: [PATCH v2 11/14] xen/riscv: introduce trap_init()
Date: Fri, 27 Jan 2023 15:59:16 +0200 [thread overview]
Message-ID: <1081e7e12f50227a4e15171129a468420b613273.1674818705.git.oleksii.kurochko@gmail.com> (raw)
In-Reply-To: <cover.1674818705.git.oleksii.kurochko@gmail.com>
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
Changes in V2:
- Rename setup_trap_handler() to trap_init().
- Add Reviewed-by to the commit message.
---
xen/arch/riscv/include/asm/traps.h | 1 +
xen/arch/riscv/setup.c | 4 ++++
xen/arch/riscv/traps.c | 7 +++++++
3 files changed, 12 insertions(+)
diff --git a/xen/arch/riscv/include/asm/traps.h b/xen/arch/riscv/include/asm/traps.h
index f3fb6b25d1..f1879294ef 100644
--- a/xen/arch/riscv/include/asm/traps.h
+++ b/xen/arch/riscv/include/asm/traps.h
@@ -7,6 +7,7 @@
void do_trap(struct cpu_user_regs *cpu_regs);
void handle_trap(void);
+void trap_init(void);
#endif /* __ASSEMBLY__ */
diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c
index d09ffe1454..c8513ca4f8 100644
--- a/xen/arch/riscv/setup.c
+++ b/xen/arch/riscv/setup.c
@@ -1,7 +1,9 @@
#include <xen/compile.h>
#include <xen/init.h>
+#include <asm/csr.h>
#include <asm/early_printk.h>
+#include <asm/traps.h>
/* Xen stack for bringing up the first CPU. */
unsigned char __initdata cpu0_boot_stack[STACK_SIZE]
@@ -11,6 +13,8 @@ void __init noreturn start_xen(void)
{
early_printk("Hello from C env\n");
+ trap_init();
+
for ( ;; )
asm volatile ("wfi");
diff --git a/xen/arch/riscv/traps.c b/xen/arch/riscv/traps.c
index f2a1e1ffcf..31ed63e3c1 100644
--- a/xen/arch/riscv/traps.c
+++ b/xen/arch/riscv/traps.c
@@ -11,6 +11,13 @@
#include <xen/errno.h>
#include <xen/lib.h>
+void trap_init(void)
+{
+ unsigned long addr = (unsigned long)&handle_trap;
+
+ csr_write(CSR_STVEC, addr);
+}
+
static const char *decode_trap_cause(unsigned long cause)
{
static const char *const trap_causes[] = {
--
2.39.0
next prev parent reply other threads:[~2023-01-27 14:00 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-27 13:59 [PATCH v2 00/14] RISCV basic exception handling implementation Oleksii Kurochko
2023-01-27 13:59 ` [PATCH v2 01/14] xen/riscv: add _zicsr to CFLAGS Oleksii Kurochko
2023-01-31 0:21 ` Alistair Francis
2023-01-31 9:14 ` Jan Beulich
2023-02-06 16:09 ` Oleksii
2023-01-27 13:59 ` [PATCH v2 02/14] xen/riscv: add <asm/asm.h> header Oleksii Kurochko
2023-01-31 0:49 ` Alistair Francis
2023-02-06 16:22 ` Oleksii
2023-01-27 13:59 ` [PATCH v2 03/14] xen/riscv: add <asm/riscv_encoding.h header Oleksii Kurochko
2023-01-30 13:29 ` Alistair Francis
2023-01-27 13:59 ` [PATCH v2 04/14] xen/riscv: add <asm/csr.h> header Oleksii Kurochko
2023-01-27 14:10 ` Jan Beulich
2023-01-30 11:37 ` Oleksii
2023-01-30 13:26 ` Alistair Francis
2023-01-27 13:59 ` [PATCH v2 05/14] xen/riscv: introduce empty <asm/string.h> Oleksii Kurochko
2023-01-31 0:49 ` Alistair Francis
2023-01-27 13:59 ` [PATCH v2 06/14] xen/riscv: introduce empty <asm/cache.h> Oleksii Kurochko
2023-01-31 0:50 ` Alistair Francis
2023-01-27 13:59 ` [PATCH v2 07/14] xen/riscv: introduce exception context Oleksii Kurochko
2023-01-27 14:24 ` Jan Beulich
2023-01-30 11:54 ` Oleksii
2023-01-30 13:50 ` Jan Beulich
2023-01-30 22:44 ` Julien Grall
2023-02-01 2:27 ` Andrew Cooper
2023-02-01 1:30 ` Stefano Stabellini
2023-02-06 17:13 ` Oleksii
2023-01-27 14:54 ` Julien Grall
2023-01-30 11:40 ` Oleksii
2023-01-30 22:11 ` Julien Grall
2023-01-31 12:24 ` Oleksii
2023-01-31 12:39 ` Julien Grall
2023-01-27 13:59 ` [PATCH v2 08/14] xen/riscv: introduce exception handlers implementation Oleksii Kurochko
2023-01-27 13:59 ` [PATCH v2 09/14] xen/riscv: introduce decode_cause() stuff Oleksii Kurochko
2023-01-27 13:59 ` [PATCH v2 10/14] xen/riscv: mask all interrupts Oleksii Kurochko
2023-01-27 13:59 ` Oleksii Kurochko [this message]
2023-01-27 13:59 ` [PATCH v2 12/14] xen/riscv: introduce an implementation of macros from <asm/bug.h> Oleksii Kurochko
2023-01-27 14:34 ` Jan Beulich
2023-01-30 11:23 ` Oleksii
2023-01-27 14:38 ` Jan Beulich
2023-01-27 16:02 ` Julien Grall
2023-01-30 11:35 ` Oleksii
2023-01-30 11:49 ` Juergen Gross
2023-01-30 22:28 ` Julien Grall
2023-01-31 12:34 ` Oleksii
2023-02-01 17:40 ` Oleksii
2023-02-01 22:11 ` Julien Grall
2023-02-02 11:50 ` Jan Beulich
2023-02-03 13:15 ` Oleksii
2023-02-03 13:23 ` Julien Grall
2023-02-03 16:25 ` Oleksii
2023-01-27 13:59 ` [PATCH v2 13/14] xen/riscv: test basic handling stuff Oleksii Kurochko
2023-01-27 13:59 ` [PATCH v2 14/14] automation: add smoke test to verify macros from bug.h Oleksii Kurochko
2023-01-27 14:43 ` Michal Orzel
2023-01-30 11:15 ` Oleksii
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