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Commit 37e11d5c authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
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Drivers: hv: vmbus: Define an APIs to manage interrupt state 



As part of cleaning up architecture specific code, define APIs
to manage interrupt state.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7297ff0c

arch/x86/include/asm/mshyperv.h

+3 −0
Original line number Diff line number Diff line
@@ -151,6 +151,9 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type) 


#define hv_get_vp_index(index) rdmsrl(HV_X64_MSR_VP_INDEX, index)



#define hv_get_synint_state(int_num, val) rdmsrl(int_num, val)

#define hv_set_synint_state(int_num, val) wrmsrl(int_num, val)



void hyperv_callback_vector(void);

#ifdef CONFIG_TRACING

#define trace_hyperv_callback_vector hyperv_callback_vector

drivers/hv/hv.c

+8 −4
Original line number Diff line number Diff line
@@ -284,14 +284,16 @@ int hv_synic_init(unsigned int cpu) 
	hv_set_siefp(siefp.as_uint64);



	/* Setup the shared SINT. */

	rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,

			    shared_sint.as_uint64);



	shared_sint.as_uint64 = 0;

	shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;

	shared_sint.masked = false;

	shared_sint.auto_eoi = true;



	wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	hv_set_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,

			    shared_sint.as_uint64);



	/* Enable the global synic bit */

	hv_get_synic_state(sctrl.as_uint64);
@@ -384,13 +386,15 @@ int hv_synic_cleanup(unsigned int cpu) 
		hv_ce_shutdown(hv_context.clk_evt[cpu]);

	}



	rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,

			    shared_sint.as_uint64);



	shared_sint.masked = 1;



	/* Need to correctly cleanup in the case of SMP!!! */

	/* Disable the interrupt */

	wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	hv_set_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,

			    shared_sint.as_uint64);



	hv_get_simp(simp.as_uint64);

	simp.simp_enabled = 0;