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Commit 8e307bf8 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
Browse files

Drivers: hv: vmbus: Define APIs to manipulate the event page 



As part of cleaning up architecture specific code, define APIs
to manipulate the event page.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 155e4a2f

arch/x86/include/asm/mshyperv.h

+3 −0
Original line number Diff line number Diff line
@@ -143,6 +143,9 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type) 
#define hv_get_simp(val) rdmsrl(HV_X64_MSR_SIMP, val)

#define hv_set_simp(val) wrmsrl(HV_X64_MSR_SIMP, val)



#define hv_get_siefp(val) rdmsrl(HV_X64_MSR_SIEFP, val)

#define hv_set_siefp(val) wrmsrl(HV_X64_MSR_SIEFP, val)



void hyperv_callback_vector(void);

#ifdef CONFIG_TRACING

#define trace_hyperv_callback_vector hyperv_callback_vector

drivers/hv/hv.c

+4 −4
Original line number Diff line number Diff line
@@ -276,12 +276,12 @@ int hv_synic_init(unsigned int cpu) 
	hv_set_simp(simp.as_uint64);



	/* Setup the Synic's event page */

	rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	hv_get_siefp(siefp.as_uint64);

	siefp.siefp_enabled = 1;

	siefp.base_siefp_gpa = virt_to_phys(hv_context.synic_event_page[cpu])

		>> PAGE_SHIFT;



	wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	hv_set_siefp(siefp.as_uint64);



	/* Setup the shared SINT. */

	rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
@@ -398,11 +398,11 @@ int hv_synic_cleanup(unsigned int cpu) 


	hv_set_simp(simp.as_uint64);



	rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	hv_get_siefp(siefp.as_uint64);

	siefp.siefp_enabled = 0;

	siefp.base_siefp_gpa = 0;



	wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	hv_set_siefp(siefp.as_uint64);



	/* Disable the global synic bit */

	rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);