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authorWei Liu <wei.liu@kernel.org>2021-02-03 15:04:34 +0000
committerWei Liu <wei.liu@kernel.org>2021-02-11 08:47:07 +0000
commite39397d1fd6851bef4dfb63a631b8e15d1f43329 (patch)
tree3307af33016b6666afee279c70d64688e16e8f65 /arch/x86/include
parent466a9c3f88d04152ca83e840ca940c5f700402ac (diff)
downloadlinux-e39397d1fd6851bef4dfb63a631b8e15d1f43329.tar.gz
x86/hyperv: implement an MSI domain for root partition
When Linux runs as the root partition on Microsoft Hypervisor, its interrupts are remapped. Linux will need to explicitly map and unmap interrupts for hardware. Implement an MSI domain to issue the correct hypercalls. And initialize this irq domain as the default MSI irq domain. Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-16-wei.liu@kernel.org
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/mshyperv.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 7bd4022da061..4533773115ea 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -263,6 +263,8 @@ static inline void hv_set_msi_entry_from_desc(union hv_msi_entry *msi_entry,
msi_entry->data.as_uint32 = msi_desc->msg.data;
}
+struct irq_domain *hv_create_pci_msi_domain(void);
+
#else /* CONFIG_HYPERV */
static inline void hyperv_init(void) {}
static inline void hyperv_setup_mmu_ops(void) {}