[PATCH 03/18] hyperv-tlfs: Update struct hv_send_ipi{_ex}'s declarations

Nicolas Saenz Julienne
2024-06-09T15:52:10Z

Both 'struct hv_send_ipi' and 'struct hv_send_ipi_ex' have an 'union
hv_input_vtl' parameter which has been ignored until now. Expose it, as
KVM will soon provide a way of dealing with VTL-aware IPIs. While doing
Also fixup __send_ipi_mask_ex().

Signed-off-by: Nicolas Saenz Julienne <nsaenz@amazon.com>
---
arch/x86/hyperv/hv_apic.c | 3 +--
include/asm-generic/hyperv-tlfs.h | 6 ++++--
2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index 0569f579338b5..97907371d51ef 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -121,9 +121,8 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector,
if (unlikely(!ipi_arg))
goto ipi_mask_ex_done;

+ memset(ipi_arg, 0, sizeof(*ipi_arg));
ipi_arg->vector = vector;
- ipi_arg->reserved = 0;
- ipi_arg->vp_set.valid_bank_mask = 0;

/*
* Use HV_GENERIC_SET_ALL and avoid converting cpumask to VP_SET
diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
index ffac04bbd0c19..28cde641b5474 100644
--- a/include/asm-generic/hyperv-tlfs.h
+++ b/include/asm-generic/hyperv-tlfs.h
@@ -425,14 +425,16 @@ struct hv_vpset {
/* HvCallSendSyntheticClusterIpi hypercall */
struct hv_send_ipi {
u32 vector;
- u32 reserved;
+ union hv_input_vtl in_vtl;
+ u8 reserved[3];
u64 cpu_mask;
} __packed;

/* HvCallSendSyntheticClusterIpiEx hypercall */
struct hv_send_ipi_ex {
u32 vector;
- u32 reserved;
+ union hv_input_vtl in_vtl;
+ u8 reserved[3];
struct hv_vpset vp_set;
} __packed;

--
2.40.1