From 5fcf3a55a62afb0760ccb6f391d62f20bce4a42f Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 10 Dec 2019 15:48:29 +1100 Subject: tools/kvm_stat: Fix kvm_exit filter name The filter name is fixed to "exit_reason" for some kvm_exit events, no matter what architect we have. Actually, the filter name ("exit_reason") is only applicable to x86, meaning it's broken on other architects including aarch64. This fixes the issue by providing various kvm_exit filter names, depending on architect we're on. Afterwards, the variable filter name is picked and applied through ioctl(fd, SET_FILTER). Reported-by: Andrew Jones Signed-off-by: Gavin Shan Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini --- tools/kvm/kvm_stat/kvm_stat | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'tools/kvm') diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat index ad1b9e646c49..4cf93110c259 100755 --- a/tools/kvm/kvm_stat/kvm_stat +++ b/tools/kvm/kvm_stat/kvm_stat @@ -270,6 +270,7 @@ class ArchX86(Arch): def __init__(self, exit_reasons): self.sc_perf_evt_open = 298 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = 'exit_reason' self.exit_reasons = exit_reasons def debugfs_is_child(self, field): @@ -289,6 +290,7 @@ class ArchPPC(Arch): # numbers depend on the wordsize. char_ptr_size = ctypes.sizeof(ctypes.c_char_p) self.ioctl_numbers['SET_FILTER'] = 0x80002406 | char_ptr_size << 16 + self.exit_reason_field = 'exit_nr' self.exit_reasons = {} def debugfs_is_child(self, field): @@ -300,6 +302,7 @@ class ArchA64(Arch): def __init__(self): self.sc_perf_evt_open = 241 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = 'esr_ec' self.exit_reasons = AARCH64_EXIT_REASONS def debugfs_is_child(self, field): @@ -311,6 +314,7 @@ class ArchS390(Arch): def __init__(self): self.sc_perf_evt_open = 331 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = None self.exit_reasons = None def debugfs_is_child(self, field): @@ -541,8 +545,8 @@ class TracepointProvider(Provider): """ filters = {} filters['kvm_userspace_exit'] = ('reason', USERSPACE_EXIT_REASONS) - if ARCH.exit_reasons: - filters['kvm_exit'] = ('exit_reason', ARCH.exit_reasons) + if ARCH.exit_reason_field and ARCH.exit_reasons: + filters['kvm_exit'] = (ARCH.exit_reason_field, ARCH.exit_reasons) return filters def _get_available_fields(self): -- cgit v1.2.3