[PATCH v4 1/8] x86/hyper-v: move struct hv_flush_pcpu{,ex} definitions to common header

Vitaly Kuznetsov
2018-05-16T15:21:41Z

Hyper-V TLB flush hypercalls definitions will be required for KVM so move
them hyperv-tlfs.h. Structures also need to be renamed as '_pcpu' suffix is
irrelevant for a general-purpose definition.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/hyperv/mmu.c | 40 ++++++++++----------------------------
arch/x86/include/asm/hyperv-tlfs.h | 20 +++++++++++++++++++
2 files changed, 30 insertions(+), 30 deletions(-)

diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c
index 56c9ebac946f..528a1f34df96 100644
--- a/arch/x86/hyperv/mmu.c
+++ b/arch/x86/hyperv/mmu.c
@@ -13,32 +13,12 @@
#define CREATE_TRACE_POINTS
#include <asm/trace/hyperv.h>

-/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
-struct hv_flush_pcpu {
- u64 address_space;
- u64 flags;
- u64 processor_mask;
- u64 gva_list[];
-};
-
-/* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
-struct hv_flush_pcpu_ex {
- u64 address_space;
- u64 flags;
- struct {
- u64 format;
- u64 valid_bank_mask;
- u64 bank_contents[];
- } hv_vp_set;
- u64 gva_list[];
-};
-
/* Each gva in gva_list encodes up to 4096 pages to flush */
#define HV_TLB_FLUSH_UNIT (4096 * PAGE_SIZE)

-static struct hv_flush_pcpu __percpu **pcpu_flush;
+static struct hv_tlb_flush * __percpu *pcpu_flush;

-static struct hv_flush_pcpu_ex __percpu **pcpu_flush_ex;
+static struct hv_tlb_flush_ex * __percpu *pcpu_flush_ex;

/*
* Fills in gva_list starting from offset. Returns the number of items added.
@@ -71,7 +51,7 @@ static inline int fill_gva_list(u64 gva_list[], int offset,
}

/* Return the number of banks in the resulting vp_set */
-static inline int cpumask_to_vp_set(struct hv_flush_pcpu_ex *flush,
+static inline int cpumask_to_vp_set(struct hv_tlb_flush_ex *flush,
const struct cpumask *cpus)
{
int cpu, vcpu, vcpu_bank, vcpu_offset, nr_bank = 1;
@@ -81,7 +61,7 @@ static inline int cpumask_to_vp_set(struct hv_flush_pcpu_ex *flush,
return 0;

/*
- * Clear all banks up to the maximum possible bank as hv_flush_pcpu_ex
+ * Clear all banks up to the maximum possible bank as hv_tlb_flush_ex
* structs are not cleared between calls, we risk flushing unneeded
* vCPUs otherwise.
*/
@@ -109,8 +89,8 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus,
const struct flush_tlb_info *info)
{
int cpu, vcpu, gva_n, max_gvas;
- struct hv_flush_pcpu **flush_pcpu;
- struct hv_flush_pcpu *flush;
+ struct hv_tlb_flush **flush_pcpu;
+ struct hv_tlb_flush *flush;
u64 status = U64_MAX;
unsigned long flags;

@@ -196,8 +176,8 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus,
const struct flush_tlb_info *info)
{
int nr_bank = 0, max_gvas, gva_n;
- struct hv_flush_pcpu_ex **flush_pcpu;
- struct hv_flush_pcpu_ex *flush;
+ struct hv_tlb_flush_ex **flush_pcpu;
+ struct hv_tlb_flush_ex *flush;
u64 status = U64_MAX;
unsigned long flags;

@@ -303,7 +283,7 @@ void hyper_alloc_mmu(void)
return;

if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED))
- pcpu_flush = alloc_percpu(struct hv_flush_pcpu *);
+ pcpu_flush = alloc_percpu(struct hv_tlb_flush *);
else
- pcpu_flush_ex = alloc_percpu(struct hv_flush_pcpu_ex *);
+ pcpu_flush_ex = alloc_percpu(struct hv_tlb_flush_ex *);
}
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index a8897615354e..3d4ce3935a62 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -713,4 +713,24 @@ struct hv_enlightened_vmcs {
#define HV_STIMER_AUTOENABLE (1ULL << 3)
#define HV_STIMER_SINT(config) (__u8)(((config) >> 16) & 0x0F)

+/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
+struct hv_tlb_flush {
+ u64 address_space;
+ u64 flags;
+ u64 processor_mask;
+ u64 gva_list[];
+};
+
+/* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
+struct hv_tlb_flush_ex {
+ u64 address_space;
+ u64 flags;
+ struct {
+ u64 format;
+ u64 valid_bank_mask;
+ u64 bank_contents[];
+ } hv_vp_set;
+ u64 gva_list[];
+};
+
#endif
--
2.14.3