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| author | Boqun Feng <boqun.feng@gmail.com> | 2020-02-10 06:39:53 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-03-09 17:51:31 +0300 |
| commit | 1cf106d93245f436c10e73cd3d4b885067d4bbcc (patch) | |
| tree | 3a204c8cf73a66d23bf196b2e1829c061dd13432 /arch/x86/include/asm/hyperv-tlfs.h | |
| parent | 61bfd920abbf2c8c9c3b10bb335475e707247573 (diff) | |
| download | linux-1cf106d93245f436c10e73cd3d4b885067d4bbcc.tar.xz | |
PCI: hv: Introduce hv_msi_entry
Add a new structure (hv_msi_entry), which is also defined in the TLFS,
to describe the msi entry for HVCALL_RETARGET_INTERRUPT. The structure
is needed because its layout may be different from architecture to
architecture.
Also add a new generic interface hv_set_msi_entry_from_desc() to allow
different archs to set the msi entry from msi_desc.
No functional change, only preparation for the future support of virtual
PCI on non-x86 architectures.
Signed-off-by: Boqun Feng (Microsoft) <boqun.feng@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Diffstat (limited to 'arch/x86/include/asm/hyperv-tlfs.h')
| -rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index a0b6a88d2f05..29336574d0bc 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -913,11 +913,18 @@ struct hv_partition_assist_pg { u32 tlb_lock_count; }; +union hv_msi_entry { + u64 as_uint64; + struct { + u32 address; + u32 data; + } __packed; +}; + struct hv_interrupt_entry { u32 source; /* 1 for MSI(-X) */ u32 reserved1; - u32 address; - u32 data; + union hv_msi_entry msi_entry; } __packed; /* |