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update-linux-headers: import linux/kvm_para.h header

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Right now QEMU is importing arch/x86/include/uapi/asm/kvm_para.h
because it includes definitions for kvmclock and for KVM CPUID
bits.  However, other definitions for KVM hypercall values and return
codes are included in include/uapi/linux/kvm_para.h and they will be
used by SEV-SNP.

To ensure that it is possible to include both <linux/kvm_para.h> and
"standard-headers/asm-x86/kvm_para.h" without conflicts, provide
linux/kvm_para.h as a portable header too, and forward linux-headers/
files to those in include/standard-headers.  Note that <linux/kvm_para.h>
will include architecture-specific definitions as well, but
"standard-headers/linux/kvm_para.h" will not because it can be used in
architecture-independent files.

This could easily be extended to other architectures, but right now
they do not need any symbol in their specific kvm_para.h files.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-06-03 14:25:06 +02:00
parent 5f69e42da5
commit aa274c33c3
4 changed files with 62 additions and 1 deletions
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2
linux-headers/linux/kvm_para.h Normal file
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@ -0,0 +1,2 @@
#include "standard-headers/linux/kvm_para.h"
#include <asm/kvm_para.h>