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Drivers: hv: Rename the SynIC enable and disable routines

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The confidential VMBus requires support for the both hypervisor
facing SynIC and the paravisor one.

Rename the functions that enable and disable SynIC with the
hypervisor. No functional changes.

Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Roman Kisel
2025-10-08 16:34:13 -07:00
committed by Wei Liu
parent 09406f2f84
commit 74fa5d7e5f
4 changed files with 12 additions and 11 deletions
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2
drivers/hv/channel_mgmt.c
View File

@@ -846,7 +846,7 @@ static void vmbus_wait_for_unload(void)
/*
* In a CoCo VM the hyp_synic_message_page is not allocated
* in hv_synic_alloc(). Instead it is set/cleared in
* hv_synic_enable_regs() and hv_synic_disable_regs()
* hv_hyp_synic_enable_regs() and hv_hyp_synic_disable_regs()
* such that it is set only when the CPU is online. If
* not all present CPUs are online, the message page
* might be NULL, so skip such CPUs.

11
drivers/hv/hv.c
View File

@@ -268,9 +268,10 @@ void hv_synic_free(void)
}
/*
* hv_synic_enable_regs - Initialize the Synthetic Interrupt Controller.
* hv_hyp_synic_enable_regs - Initialize the Synthetic Interrupt Controller
* with the hypervisor.
*/
void hv_synic_enable_regs(unsigned int cpu)
void hv_hyp_synic_enable_regs(unsigned int cpu)
{
struct hv_per_cpu_context *hv_cpu =
per_cpu_ptr(hv_context.cpu_context, cpu);
@@ -337,14 +338,14 @@ void hv_synic_enable_regs(unsigned int cpu)
int hv_synic_init(unsigned int cpu)
{
hv_synic_enable_regs(cpu);
hv_hyp_synic_enable_regs(cpu);
hv_stimer_legacy_init(cpu, VMBUS_MESSAGE_SINT);
return 0;
}
void hv_synic_disable_regs(unsigned int cpu)
void hv_hyp_synic_disable_regs(unsigned int cpu)
{
struct hv_per_cpu_context *hv_cpu =
per_cpu_ptr(hv_context.cpu_context, cpu);
@@ -532,7 +533,7 @@ int hv_synic_cleanup(unsigned int cpu)
always_cleanup:
hv_stimer_legacy_cleanup(cpu);
hv_synic_disable_regs(cpu);
hv_hyp_synic_disable_regs(cpu);
return ret;
}

4
drivers/hv/hyperv_vmbus.h
View File

@@ -190,10 +190,10 @@ extern int hv_synic_alloc(void);
extern void hv_synic_free(void);
extern void hv_synic_enable_regs(unsigned int cpu);
extern void hv_hyp_synic_enable_regs(unsigned int cpu);
extern int hv_synic_init(unsigned int cpu);
extern void hv_synic_disable_regs(unsigned int cpu);
extern void hv_hyp_synic_disable_regs(unsigned int cpu);
extern int hv_synic_cleanup(unsigned int cpu);
/* Interface */

6
drivers/hv/vmbus_drv.c
View File

@@ -2810,7 +2810,7 @@ static void hv_crash_handler(struct pt_regs *regs)
*/
cpu = smp_processor_id();
hv_stimer_cleanup(cpu);
hv_synic_disable_regs(cpu);
hv_hyp_synic_disable_regs(cpu);
};
static int hv_synic_suspend(void)
@@ -2835,14 +2835,14 @@ static int hv_synic_suspend(void)
* interrupts-disabled context.
*/
hv_synic_disable_regs(0);
hv_hyp_synic_disable_regs(0);
return 0;
}
static void hv_synic_resume(void)
{
hv_synic_enable_regs(0);
hv_hyp_synic_enable_regs(0);
/*
* Note: we don't need to call hv_stimer_init(0), because the timer