Enable loongarch kvm config and add the makefile to support build kvm
module.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
---
arch/loongarch/Kbuild | 1 +
arch/loongarch/Kconfig | 2 ++
arch/loongarch/configs/loongson3_defconfig | 2 ++
arch/loongarch/kvm/Kconfig | 38 ++++++++++++++++++++++
arch/loongarch/kvm/Makefile | 21 ++++++++++++
5 files changed, 64 insertions(+)
create mode 100644 arch/loongarch/kvm/Kconfig
create mode 100644 arch/loongarch/kvm/Makefile
diff --git a/arch/loongarch/Kbuild b/arch/loongarch/Kbuild
index b01f5cdb2..40be8a169 100644
--- a/arch/loongarch/Kbuild
+++ b/arch/loongarch/Kbuild
@@ -2,6 +2,7 @@ obj-y += kernel/
obj-y += mm/
obj-y += net/
obj-y += vdso/
+obj-y += kvm/
# for cleaning
subdir- += boot
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 9cc8b84f7..424ad9392 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -142,6 +142,7 @@ config LOONGARCH
select USE_PERCPU_NUMA_NODE_ID
select USER_STACKTRACE_SUPPORT
select ZONE_DMA32
+ select HAVE_KVM
config 32BIT
bool
@@ -541,3 +542,4 @@ source "drivers/acpi/Kconfig"
endmenu
source "drivers/firmware/Kconfig"
+source "arch/loongarch/kvm/Kconfig"
diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/configs/loongson3_defconfig
index eb84cae64..9a6e31b43 100644
--- a/arch/loongarch/configs/loongson3_defconfig
+++ b/arch/loongarch/configs/loongson3_defconfig
@@ -62,6 +62,8 @@ CONFIG_EFI_ZBOOT=y
CONFIG_EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER=y
CONFIG_EFI_CAPSULE_LOADER=m
CONFIG_EFI_TEST=m
+CONFIG_VIRTUALIZATION=y
+CONFIG_KVM=m
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig
new file mode 100644
index 000000000..8a999b4c0
--- /dev/null
+++ b/arch/loongarch/kvm/Kconfig
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# KVM configuration
+#
+
+source "virt/kvm/Kconfig"
+
+menuconfig VIRTUALIZATION
+ bool "Virtualization"
+ help
+ Say Y here to get to see options for using your Linux host to run
+ other operating systems inside virtual machines (guests).
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and
+ disabled.
+
+if VIRTUALIZATION
+
+config KVM
+ tristate "Kernel-based Virtual Machine (KVM) support"
+ depends on HAVE_KVM
+ select MMU_NOTIFIER
+ select ANON_INODES
+ select PREEMPT_NOTIFIERS
+ select KVM_MMIO
+ select KVM_GENERIC_DIRTYLOG_READ_PROTECT
+ select HAVE_KVM_VCPU_ASYNC_IOCTL
+ select HAVE_KVM_EVENTFD
+ select SRCU
+ help
+ Support hosting virtualized guest machines using hardware
+ virtualization extensions. You will need a fairly processor
+ equipped with virtualization extensions.
+
+ If unsure, say N.
+
+endif # VIRTUALIZATION
diff --git a/arch/loongarch/kvm/Makefile b/arch/loongarch/kvm/Makefile
new file mode 100644
index 000000000..42e9dcc18
--- /dev/null
+++ b/arch/loongarch/kvm/Makefile
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for LOONGARCH KVM support
+#
+
+ccflags-y += -I $(srctree)/$(src)
+
+include $(srctree)/virt/kvm/Makefile.kvm
+
+obj-$(CONFIG_KVM) += kvm.o
+
+kvm-y += main.o
+kvm-y += vm.o
+kvm-y += vmid.o
+kvm-y += tlb.o
+kvm-y += mmu.o
+kvm-y += vcpu.o
+kvm-y += exit.o
+kvm-y += interrupt.o
+kvm-y += timer.o
+kvm-y += switch.o
--
2.31.1Hi Tianrui,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.2]
[cannot apply to kvm/queue kvm/linux-next next-20230220]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Tianrui-Zhao/LoongArch-KVM-Add-kvm-related-header-files/20230220-151305
patch link: https://lore.kernel.org/r/20230220065735.1282809-30-zhaotianrui%40loongson.cn
patch subject: [PATCH v2 29/29] LoongArch: KVM: Enable kvm config and add the makefile
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20230220/202302201849.mzOz4b5p-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/55ee4e26440ad32966cf3ee796b8a519c77ac66b
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Tianrui-Zhao/LoongArch-KVM-Add-kvm-related-header-files/20230220-151305
git checkout 55ee4e26440ad32966cf3ee796b8a519c77ac66b
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash arch/loongarch/kvm/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302201849.mzOz4b5p-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from include/trace/define_trace.h:102,
from arch/loongarch/kvm/trace.h:137,
from arch/loongarch/kvm/vcpu.c:14:
arch/loongarch/kvm/./trace.h: In function 'trace_raw_output_kvm_exit':
arch/loongarch/kvm/./trace.h:54:31: warning: left-hand operand of comma expression has no effect [-Wunused-value]
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/loongarch/kvm/./trace.h:54:48: error: expected ';' before '}' token
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/loongarch/kvm/./trace.h:54:49: error: expected ')' before ',' token
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/loongarch/kvm/./trace.h:54:9: warning: initialization of 'long unsigned int' from 'char *' makes integer from pointer without a cast [-Wint-conversion]
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:54:9: note: (near initialization for 'symbols[0].mask')
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/loongarch/kvm/./trace.h:54:9: error: initializer element is not constant
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:54:9: note: (near initialization for 'symbols[0].mask')
54 | ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:73:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
73 | kvm_trace_symbol_exit_types),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:77:37: warning: braces around scalar initializer
77 | static const struct trace_print_flags symbols[] = \
| ^~~~~~~~~~~~~~~~~
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
include/trace/stages/stage3_trace_output.h:77:37: note: (near initialization for 'symbols[0].name')
77 | static const struct trace_print_flags symbols[] = \
| ^~~~~~~~~~~~~~~~~
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:78:43: warning: initialization of 'const char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:43: note: (near initialization for 'symbols[0].name')
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
>> include/linux/stddef.h:8:14: warning: excess elements in scalar initializer
8 | #define NULL ((void *)0)
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:47: note: in expansion of macro 'NULL'
78 | { symbol_array, { -1, NULL }}; \
| ^~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
include/linux/stddef.h:8:14: note: (near initialization for 'symbols[0].name')
8 | #define NULL ((void *)0)
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:47: note: in expansion of macro 'NULL'
78 | { symbol_array, { -1, NULL }}; \
| ^~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:78:25: warning: missing braces around initializer [-Wmissing-braces]
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:58:1: note: in expansion of macro 'TRACE_EVENT'
58 | TRACE_EVENT(kvm_exit,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:71:13: note: in expansion of macro 'TP_printk'
71 | TP_printk("[%s]PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:72:23: note: in expansion of macro '__print_symbolic'
72 | __print_symbolic(__entry->reason,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h: In function 'trace_raw_output_kvm_aux':
arch/loongarch/kvm/./trace.h:86:33: warning: left-hand operand of comma expression has no effect [-Wunused-value]
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:45: error: expected ';' before '}' token
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:46: error: expected ')' before ',' token
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:9: warning: initialization of 'long unsigned int' from 'char *' makes integer from pointer without a cast [-Wint-conversion]
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:9: note: (near initialization for 'symbols[0].mask')
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:9: error: initializer element is not constant
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:86:9: note: (near initialization for 'symbols[0].mask')
86 | ({ KVM_TRACE_AUX_RESTORE, "restore" }, \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/./trace.h:113:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
113 | kvm_trace_symbol_aux_op),
| ^~~~~~~~~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:77:37: warning: braces around scalar initializer
77 | static const struct trace_print_flags symbols[] = \
| ^~~~~~~~~~~~~~~~~
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
include/trace/stages/stage3_trace_output.h:77:37: note: (near initialization for 'symbols[0].name')
77 | static const struct trace_print_flags symbols[] = \
| ^~~~~~~~~~~~~~~~~
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:78:43: warning: initialization of 'const char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:43: note: (near initialization for 'symbols[0].name')
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
>> include/linux/stddef.h:8:14: warning: excess elements in scalar initializer
8 | #define NULL ((void *)0)
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:47: note: in expansion of macro 'NULL'
78 | { symbol_array, { -1, NULL }}; \
| ^~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
include/linux/stddef.h:8:14: note: (near initialization for 'symbols[0].name')
8 | #define NULL ((void *)0)
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
include/trace/stages/stage3_trace_output.h:78:47: note: in expansion of macro 'NULL'
78 | { symbol_array, { -1, NULL }}; \
| ^~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:78:25: warning: missing braces around initializer [-Wmissing-braces]
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:112:23: note: in expansion of macro '__print_symbolic'
112 | __print_symbolic(__entry->op,
| ^~~~~~~~~~~~~~~~
>> include/trace/stages/stage3_trace_output.h:78:39: error: expected expression before ',' token
78 | { symbol_array, { -1, NULL }}; \
| ^
include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
203 | trace_event_printf(iter, print); \
| ^~~~~
include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
45 | PARAMS(print)); \
| ^~~~~~
arch/loongarch/kvm/./trace.h:95:1: note: in expansion of macro 'TRACE_EVENT'
95 | TRACE_EVENT(kvm_aux,
| ^~~~~~~~~~~
arch/loongarch/kvm/./trace.h:111:13: note: in expansion of macro 'TP_printk'
111 | TP_printk("%s %s PC: 0x%08lx",
| ^~~~~~~~~
arch/loongarch/kvm/./trace.h:114:23: note: in expansion of macro '__print_symbolic'
114 | __print_symbolic(__entry->state,
| ^~~~~~~~~~~~~~~~
arch/loongarch/kvm/vcpu.c: In function 'kvm_own_fpu':
arch/loongarch/kvm/vcpu.c:595:23: warning: variable 'sr' set but not used [-Wunused-but-set-variable]
595 | unsigned long sr;
| ^~
arch/loongarch/kvm/vcpu.c: At top level:
arch/loongarch/kvm/vcpu.c:636:5: warning: no previous prototype for 'kvm_vcpu_ioctl_interrupt' [-Wmissing-prototypes]
636 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/huge_mm.h:8,
from include/linux/mm.h:746,
from include/linux/kvm_host.h:16,
from arch/loongarch/kvm/vcpu.c:6:
arch/loongarch/kvm/vcpu.c:126:25: warning: 'vcpu_pid_fops' defined but not used [-Wunused-const-variable=]
126 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_pid_fops, vcpu_pid_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~
include/linux/fs.h:3496:37: note: in definition of macro 'DEFINE_SIMPLE_ATTRIBUTE_XSIGNED'
3496 | static const struct file_operations __fops = { \
| ^~~~~~
arch/loongarch/kvm/vcpu.c:126:1: note: in expansion of macro 'DEFINE_SIMPLE_ATTRIBUTE'
126 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_pid_fops, vcpu_pid_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/vcpu.c:116:25: warning: 'lvcpu_stat_fops' defined but not used [-Wunused-const-variable=]
116 | DEFINE_SIMPLE_ATTRIBUTE(lvcpu_stat_fops, lvcpu_stat_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~
include/linux/fs.h:3496:37: note: in definition of macro 'DEFINE_SIMPLE_ATTRIBUTE_XSIGNED'
3496 | static const struct file_operations __fops = { \
| ^~~~~~
arch/loongarch/kvm/vcpu.c:116:1: note: in expansion of macro 'DEFINE_SIMPLE_ATTRIBUTE'
116 | DEFINE_SIMPLE_ATTRIBUTE(lvcpu_stat_fops, lvcpu_stat_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~~~~~~~~~
..
vim +54 arch/loongarch/kvm/./trace.h
d73e24865c7b73 Tianrui Zhao 2023-02-20 51
d73e24865c7b73 Tianrui Zhao 2023-02-20 52 /* Tracepoints for VM exits */
d73e24865c7b73 Tianrui Zhao 2023-02-20 53 #define kvm_trace_symbol_exit_types \
d73e24865c7b73 Tianrui Zhao 2023-02-20 @54 ({ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
d73e24865c7b73 Tianrui Zhao 2023-02-20 55 { KVM_TRACE_EXIT_CACHE, "CACHE" }, \
d73e24865c7b73 Tianrui Zhao 2023-02-20 56 { KVM_TRACE_EXIT_SIGNAL, "Signal" })
d73e24865c7b73 Tianrui Zhao 2023-02-20 57
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
Hi Tianrui,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.2]
[cannot apply to kvm/queue kvm/linux-next next-20230220]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Tianrui-Zhao/LoongArch-KVM-Add-kvm-related-header-files/20230220-151305
patch link: https://lore.kernel.org/r/20230220065735.1282809-30-zhaotianrui%40loongson.cn
patch subject: [PATCH v2 29/29] LoongArch: KVM: Enable kvm config and add the makefile
config: loongarch-defconfig (https://download.01.org/0day-ci/archive/20230220/202302201710.ERtpPSuD-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/55ee4e26440ad32966cf3ee796b8a519c77ac66b
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Tianrui-Zhao/LoongArch-KVM-Add-kvm-related-header-files/20230220-151305
git checkout 55ee4e26440ad32966cf3ee796b8a519c77ac66b
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash arch/loongarch/kvm/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302201710.ERtpPSuD-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/loongarch/kvm/vcpu.c: In function 'kvm_own_fpu':
>> arch/loongarch/kvm/vcpu.c:595:23: warning: variable 'sr' set but not used [-Wunused-but-set-variable]
595 | unsigned long sr;
| ^~
arch/loongarch/kvm/vcpu.c: At top level:
>> arch/loongarch/kvm/vcpu.c:636:5: warning: no previous prototype for 'kvm_vcpu_ioctl_interrupt' [-Wmissing-prototypes]
636 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/huge_mm.h:8,
from include/linux/mm.h:746,
from include/linux/kvm_host.h:16,
from arch/loongarch/kvm/vcpu.c:6:
arch/loongarch/kvm/vcpu.c:126:25: warning: 'vcpu_pid_fops' defined but not used [-Wunused-const-variable=]
126 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_pid_fops, vcpu_pid_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~
include/linux/fs.h:3496:37: note: in definition of macro 'DEFINE_SIMPLE_ATTRIBUTE_XSIGNED'
3496 | static const struct file_operations __fops = { \
| ^~~~~~
arch/loongarch/kvm/vcpu.c:126:1: note: in expansion of macro 'DEFINE_SIMPLE_ATTRIBUTE'
126 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_pid_fops, vcpu_pid_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kvm/vcpu.c:116:25: warning: 'lvcpu_stat_fops' defined but not used [-Wunused-const-variable=]
116 | DEFINE_SIMPLE_ATTRIBUTE(lvcpu_stat_fops, lvcpu_stat_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~
include/linux/fs.h:3496:37: note: in definition of macro 'DEFINE_SIMPLE_ATTRIBUTE_XSIGNED'
3496 | static const struct file_operations __fops = { \
| ^~~~~~
arch/loongarch/kvm/vcpu.c:116:1: note: in expansion of macro 'DEFINE_SIMPLE_ATTRIBUTE'
116 | DEFINE_SIMPLE_ATTRIBUTE(lvcpu_stat_fops, lvcpu_stat_get, NULL, "%llu\n");
| ^~~~~~~~~~~~~~~~~~~~~~~
vim +/sr +595 arch/loongarch/kvm/vcpu.c
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 591
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 592 /* Enable FPU for guest and restore context */
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 593 void kvm_own_fpu(struct kvm_vcpu *vcpu)
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 594 {
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 @595 unsigned long sr;
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 596
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 597 preempt_disable();
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 598
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 599 sr = kvm_read_hw_gcsr(LOONGARCH_CSR_EUEN);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 600
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 601 /*
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 602 * Enable FPU for guest
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 603 * We set FR and FRE according to guest context
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 604 */
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 605 set_csr_euen(CSR_EUEN_FPEN);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 606
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 607 /* If guest FPU state not active, restore it now */
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 608 if (!(vcpu->arch.aux_inuse & KVM_LARCH_FPU)) {
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 609 kvm_restore_fpu(&vcpu->arch.fpu);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 610 vcpu->arch.aux_inuse |= KVM_LARCH_FPU;
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 611 trace_kvm_aux(vcpu, KVM_TRACE_AUX_RESTORE, KVM_TRACE_AUX_FPU);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 612 } else {
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 613 trace_kvm_aux(vcpu, KVM_TRACE_AUX_ENABLE, KVM_TRACE_AUX_FPU);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 614 }
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 615
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 616 preempt_enable();
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 617 }
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 618
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 619 /* Save and disable FPU */
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 620 void kvm_lose_fpu(struct kvm_vcpu *vcpu)
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 621 {
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 622 preempt_disable();
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 623
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 624 if (vcpu->arch.aux_inuse & KVM_LARCH_FPU) {
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 625 kvm_save_fpu(&vcpu->arch.fpu);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 626 vcpu->arch.aux_inuse &= ~KVM_LARCH_FPU;
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 627 trace_kvm_aux(vcpu, KVM_TRACE_AUX_SAVE, KVM_TRACE_AUX_FPU);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 628
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 629 /* Disable FPU */
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 630 clear_csr_euen(CSR_EUEN_FPEN);
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 631 }
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 632
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 633 preempt_enable();
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 634 }
81d0b9f4fa1f11 Tianrui Zhao 2023-02-20 635
a4dadfc6695b38 Tianrui Zhao 2023-02-20 @636 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
a4dadfc6695b38 Tianrui Zhao 2023-02-20 637 struct kvm_loongarch_interrupt *irq)
a4dadfc6695b38 Tianrui Zhao 2023-02-20 638 {
a4dadfc6695b38 Tianrui Zhao 2023-02-20 639 int intr = (int)irq->irq;
a4dadfc6695b38 Tianrui Zhao 2023-02-20 640 struct kvm_vcpu *dvcpu = NULL;
a4dadfc6695b38 Tianrui Zhao 2023-02-20 641
a4dadfc6695b38 Tianrui Zhao 2023-02-20 642 if (irq->cpu == -1)
a4dadfc6695b38 Tianrui Zhao 2023-02-20 643 dvcpu = vcpu;
a4dadfc6695b38 Tianrui Zhao 2023-02-20 644 else
a4dadfc6695b38 Tianrui Zhao 2023-02-20 645 dvcpu = kvm_get_vcpu(vcpu->kvm, irq->cpu);
a4dadfc6695b38 Tianrui Zhao 2023-02-20 646
a4dadfc6695b38 Tianrui Zhao 2023-02-20 647 if (intr > 0)
a4dadfc6695b38 Tianrui Zhao 2023-02-20 648 _kvm_queue_irq(dvcpu, intr);
a4dadfc6695b38 Tianrui Zhao 2023-02-20 649 else if (intr < 0)
a4dadfc6695b38 Tianrui Zhao 2023-02-20 650 _kvm_dequeue_irq(dvcpu, -intr);
a4dadfc6695b38 Tianrui Zhao 2023-02-20 651 else {
a4dadfc6695b38 Tianrui Zhao 2023-02-20 652 kvm_err("%s: invalid interrupt ioctl (%d:%d)\n", __func__,
a4dadfc6695b38 Tianrui Zhao 2023-02-20 653 irq->cpu, irq->irq);
a4dadfc6695b38 Tianrui Zhao 2023-02-20 654 return -EINVAL;
a4dadfc6695b38 Tianrui Zhao 2023-02-20 655 }
a4dadfc6695b38 Tianrui Zhao 2023-02-20 656
a4dadfc6695b38 Tianrui Zhao 2023-02-20 657 kvm_vcpu_kick(dvcpu);
a4dadfc6695b38 Tianrui Zhao 2023-02-20 658 return 0;
a4dadfc6695b38 Tianrui Zhao 2023-02-20 659 }
a4dadfc6695b38 Tianrui Zhao 2023-02-20 660
--
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