[v4,29/29] LoongArch: KVM: Enable kvm config and add the makefile

Message ID 20230321035651.598505-30-zhaotianrui@loongson.cn
State New
Headers
Series Add KVM LoongArch support |

Commit Message

zhaotianrui March 21, 2023, 3:56 a.m. UTC
  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                | 22 +++++++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 arch/loongarch/kvm/Kconfig
 create mode 100644 arch/loongarch/kvm/Makefile
  

Comments

kernel test robot March 21, 2023, 8:48 a.m. UTC | #1
Hi Tianrui,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvm/queue]
[also build test ERROR on linus/master v6.3-rc3 next-20230321]
[cannot apply to kvm/linux-next]
[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/20230321-120249
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
patch link:    https://lore.kernel.org/r/20230321035651.598505-30-zhaotianrui%40loongson.cn
patch subject: [PATCH v4 29/29] LoongArch: KVM: Enable kvm config and add the makefile
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20230321/202303211656.Qs5OrgVh-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/620334822242c573db9db17e9727fbe430ba42b9
        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/20230321-120249
        git checkout 620334822242c573db9db17e9727fbe430ba42b9
        # 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/202303211656.Qs5OrgVh-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:169,
                    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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:89:40: note: in expansion of macro 'kvm_trace_symbol_exit_types'
      89 |                                        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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             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:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             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:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __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);                                \
         |                                  ^~~~~
   arch/loongarch/kvm/./trace.h:87:13: note: in expansion of macro 'TP_printk'
      87 |             TP_printk("[%s]PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:88:23: note: in expansion of macro '__print_symbolic'
      88 |                       __print_symbolic(__entry->reason,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h: In function 'trace_raw_output_kvm_aux':
   arch/loongarch/kvm/./trace.h:118:33: warning: left-hand operand of comma expression has no effect [-Wunused-value]
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:51: error: expected ';' before '}' token
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:52: error: expected ')' before ',' token
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:9: warning: initialization of 'long unsigned int' from 'char *' makes integer from pointer without a cast [-Wint-conversion]
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:9: note: (near initialization for 'symbols[0].mask')
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:9: error: initializer element is not constant
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        kvm_trace_symbol_aux_op),
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:118:9: note: (near initialization for 'symbols[0].mask')
     118 |         ({ 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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:145:40: note: in expansion of macro 'kvm_trace_symbol_aux_op'
     145 |                                        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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             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:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             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:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __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:127:1: note: in expansion of macro 'TRACE_EVENT'
     127 | TRACE_EVENT(kvm_aux,
         | ^~~~~~~~~~~
   arch/loongarch/kvm/./trace.h:143:13: note: in expansion of macro 'TP_printk'
     143 |             TP_printk("%s %s PC: 0x%08lx",
         |             ^~~~~~~~~
   arch/loongarch/kvm/./trace.h:144:23: note: in expansion of macro '__print_symbolic'
     144 |                       __print_symbolic(__entry->op,
         |                       ^~~~~~~~~~~~~~~~


vim +54 arch/loongarch/kvm/./trace.h

d3a97e0928587c5 Tianrui Zhao 2023-03-21  51  
d3a97e0928587c5 Tianrui Zhao 2023-03-21  52  /* Tracepoints for VM exits */
d3a97e0928587c5 Tianrui Zhao 2023-03-21  53  #define kvm_trace_symbol_exit_types			\
d3a97e0928587c5 Tianrui Zhao 2023-03-21 @54  	({ KVM_TRACE_EXIT_IDLE,		"IDLE" },	\
d3a97e0928587c5 Tianrui Zhao 2023-03-21  55  	{ KVM_TRACE_EXIT_CACHE,		"CACHE" },	\
d3a97e0928587c5 Tianrui Zhao 2023-03-21  56  	{ KVM_TRACE_EXIT_SIGNAL,	"Signal" })
d3a97e0928587c5 Tianrui Zhao 2023-03-21  57
  

Patch

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 7fd51257e..f9beeb2e0 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -148,6 +148,7 @@  config LOONGARCH
 	select USE_PERCPU_NUMA_NODE_ID
 	select USER_STACKTRACE_SUPPORT
 	select ZONE_DMA32
+	select HAVE_KVM
 
 config 32BIT
 	bool
@@ -588,3 +589,4 @@  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 e18213f01..c99520374 100644
--- a/arch/loongarch/configs/loongson3_defconfig
+++ b/arch/loongarch/configs/loongson3_defconfig
@@ -63,6 +63,8 @@  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..2335e873a
--- /dev/null
+++ b/arch/loongarch/kvm/Makefile
@@ -0,0 +1,22 @@ 
+# 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
+kvm-y += csr_ops.o