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[PATCH 1/2] [hack] reserve bit KVM_HINTS_HOST_PHYS_BITS
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From: |
Gerd Hoffmann |
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Subject: |
[PATCH 1/2] [hack] reserve bit KVM_HINTS_HOST_PHYS_BITS |
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Date: |
Wed, 31 Aug 2022 14:50:58 +0200 |
The KVM_HINTS_HOST_PHYS_BITS bit indicates that qemu has host-phys-bits
turned on. This implies the guest can actually work with the full
available physical address space as advertised by CPUID(0x80000008).
Temporary hack for RfC patch and testing. This change must actually be
done in the linux kernel, then picked up by qemu via header file sync.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
include/standard-headers/asm-x86/kvm_para.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/standard-headers/asm-x86/kvm_para.h
b/include/standard-headers/asm-x86/kvm_para.h
index f0235e58a1d3..105b958c0f56 100644
--- a/include/standard-headers/asm-x86/kvm_para.h
+++ b/include/standard-headers/asm-x86/kvm_para.h
@@ -37,7 +37,8 @@
#define KVM_FEATURE_HC_MAP_GPA_RANGE 16
#define KVM_FEATURE_MIGRATION_CONTROL 17
-#define KVM_HINTS_REALTIME 0
+#define KVM_HINTS_REALTIME 0
+#define KVM_HINTS_HOST_PHYS_BITS 1
/* The last 8 bits are used to indicate how to interpret the flags field
* in pvclock structure. If no bits are set, all flags are ignored.
--
2.37.2