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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-12 09:08:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-12 09:08:57 -0800 |
| commit | 4a387c98b3abc7cf9a2281f01f9b4dd7dbc48f65 (patch) | |
| tree | 73b99ef351f5405d14f9dff8ce3f32da1e47110e /arch/x86/include | |
| parent | eef8cffcaba8f1498ec32f55c859b883315232ad (diff) | |
| parent | f66edf684edcb85c1db0b0aa8cf1a9392ba68a9d (diff) | |
Merge tag 'for-linus-5.17a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- Two small cleanups
- Another fix for addressing the EFI framebuffer above 4GB when running
as Xen dom0
- A patch to let Xen guests use reserved bits in MSI- and IO-APIC-
registers for extended APIC-IDs the same way KVM guests are doing it
already
* tag 'for-linus-5.17a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/pci: Make use of the helper macro LIST_HEAD()
xen/x2apic: Fix inconsistent indenting
xen/x86: detect support for extended destination ID
xen/x86: obtain full video frame buffer address for Dom0 also under EFI
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/xen/cpuid.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/xen/cpuid.h b/arch/x86/include/asm/xen/cpuid.h index a9630104f1c4..78e667a31d6c 100644 --- a/arch/x86/include/asm/xen/cpuid.h +++ b/arch/x86/include/asm/xen/cpuid.h @@ -100,6 +100,13 @@ /* Memory mapped from other domains has valid IOMMU entries */ #define XEN_HVM_CPUID_IOMMU_MAPPINGS (1u << 2) #define XEN_HVM_CPUID_VCPU_ID_PRESENT (1u << 3) /* vcpu id is present in EBX */ +#define XEN_HVM_CPUID_DOMID_PRESENT (1u << 4) /* domid is present in ECX */ +/* + * Bits 55:49 from the IO-APIC RTE and bits 11:5 from the MSI address can be + * used to store high bits for the Destination ID. This expands the Destination + * ID field from 8 to 15 bits, allowing to target APIC IDs up 32768. + */ +#define XEN_HVM_CPUID_EXT_DEST_ID (1u << 5) /* * Leaf 6 (0x40000x05) |