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Author SHA1 Message Date
Paolo Bonzini
dcf0926e9b x86: replace CONFIG_HAVE_KVM with IS_ENABLED(CONFIG_KVM)
It is more accurate to check if KVM is enabled, instead of having the
architecture say so.  Architectures always "have" KVM, so for example
checking CONFIG_HAVE_KVM in x86 code is pointless, but if KVM is disabled
in a specific build, there is no need for support code.

Alternatively, many of the #ifdefs could simply be deleted.  However,
this would add completely dead code.  For example, when KVM is disabled,
there should not be any posted interrupts, i.e. NOT wiring up the "dummy"
handlers and treating IRQs on those vectors as spurious is the right
thing to do.

Cc: x86@kernel.org
Cc: kbingham@kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-02-08 08:45:35 -05:00
Florian Fainelli
b0969d7687 scripts/gdb: print interrupts
This GDB script prints the interrupts in the system in the same way that
/proc/interrupts does.  This does include the architecture specific part
done by arch_show_interrupts() for x86, ARM, ARM64 and MIPS.  Example
output from an ARM64 system:

(gdb) lx-interruptlist
           CPU0       CPU1       CPU2       CPU3
 10:       3167      1225      1276      2629     GICv2   30 Level     arch_timer
 13:          0         0         0         0     GICv2   36 Level     arm-pmu
 14:          0         0         0         0     GICv2   37 Level     arm-pmu
 15:          0         0         0         0     GICv2   38 Level     arm-pmu
 16:          0         0         0         0     GICv2   39 Level     arm-pmu
 28:          0         0         0         0  interrupt-controller@8410640    5 Edge      brcmstb-gpio-wake
 30:        125         0         0         0     GICv2  128 Level     ttyS0
 31:          0         0         0         0  interrupt-controller@8416000    0 Level     mspi_done
 32:          0         0         0         0  interrupt-controller@8410640    3 Edge      brcmstb-waketimer
 33:          0         0         0         0  interrupt-controller@8418580    8 Edge      brcmstb-waketimer-rtc
 34:        872         0         0         0     GICv2  230 Level     brcm_scmi@0
 35:          0         0         0         0  interrupt-controller@8410640   10 Edge      8d0f200.usb-phy
 37:          0         0         0         0     GICv2   97 Level     PCIe PME
 42:          0         0         0         0     GICv2  145 Level     xhci-hcd:usb1
 43:         94         0         0         0     GICv2   71 Level     mmc1
 44:          0         0         0         0     GICv2   70 Level     mmc0
IPI0:        23       666       154        98      Rescheduling interrupts
IPI1:       247      1053      1701       634      Function call interrupts
IPI2:         0         0         0         0      CPU stop interrupts
IPI3:         0         0         0         0      CPU stop (for crash dump) interrupts
IPI4:         0         0         0         0      Timer broadcast interrupts
IPI5:         7         9         5         0      IRQ work interrupts
IPI6:         0         0         0         0      CPU wake-up interrupts
ERR:          0

Link: https://lkml.kernel.org/r/20230406220451.1583239-1-f.fainelli@gmail.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-04-18 16:39:33 -07:00