diff options
author | Michael Kelley <mikelley@microsoft.com> | 2021-03-02 13:38:18 -0800 |
---|---|---|
committer | Wei Liu <wei.liu@kernel.org> | 2021-03-08 17:33:00 +0000 |
commit | d608715d4771cf2d63de07a5d7b026b6f52a70a5 (patch) | |
tree | 73a567821ae3e494a4df3c3f08deffb6b3d8afdc /include/asm-generic | |
parent | 946f4b8680b8ad177f6489e023a1d95e82d502e2 (diff) | |
download | linux-d608715d4771cf2d63de07a5d7b026b6f52a70a5.tar.bz2 |
Drivers: hv: vmbus: Move handling of VMbus interrupts
VMbus interrupts are most naturally modelled as per-cpu IRQs. But
because x86/x64 doesn't have per-cpu IRQs, the core VMbus interrupt
handling machinery is done in code under arch/x86 and Linux IRQs are
not used. Adding support for ARM64 means adding equivalent code
using per-cpu IRQs under arch/arm64.
A better model is to treat per-cpu IRQs as the normal path (which it is
for modern architectures), and the x86/x64 path as the exception. Do this
by incorporating standard Linux per-cpu IRQ allocation into the main VMbus
driver, and bypassing it in the x86/x64 exception case. For x86/x64,
special case code is retained under arch/x86, but no VMbus interrupt
handling code is needed under arch/arm64.
No functional change.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/1614721102-2241-7-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/asm-generic')
-rw-r--r-- | include/asm-generic/mshyperv.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 70b798d069d9..43dc3715a98a 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -92,10 +92,8 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type) } } -int hv_setup_vmbus_irq(int irq, void (*handler)(void)); -void hv_remove_vmbus_irq(void); -void hv_enable_vmbus_irq(void); -void hv_disable_vmbus_irq(void); +void hv_setup_vmbus_handler(void (*handler)(void)); +void hv_remove_vmbus_handler(void); void hv_setup_kexec_handler(void (*handler)(void)); void hv_remove_kexec_handler(void); @@ -103,6 +101,7 @@ void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs)); void hv_remove_crash_handler(void); extern int vmbus_interrupt; +extern int vmbus_irq; #if IS_ENABLED(CONFIG_HYPERV) /* |