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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: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2017-01-19 11:51:55 -07:00 committed by Greg Kroah-Hartman
parent 155e4a2f28
commit 8e307bf82d
2 changed files with 7 additions and 4 deletions
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3
arch/x86/include/asm/mshyperv.h
View File

@ -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

8
drivers/hv/hv.c
View File

@ -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);