lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: PPC: Add OSI hypercall interface

Browse Source 
MOL uses its own hypercall interface to call back into userspace when
the guest wants to do something.

So let's implement that as an exit reason, specify it with a CAP and
only really use it when userspace wants us to.

The only user of it so far is MOL.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf
2010-03-24 21:48:30 +01:00
committed by Avi Kivity
parent 71fbfd5f38
commit ad0a048b09
6 changed files with 59 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/powerpc/include/asm/kvm_book3s.h
View File

@@ -148,6 +148,11 @@ static inline ulong dsisr(void)
extern void kvm_return_point(void);
/* Magic register values loaded into r3 and r4 before the 'sc' assembly
* instruction for the OSI hypercalls */
#define OSI_SC_MAGIC_R3 0x113724FA
#define OSI_SC_MAGIC_R4 0x77810F9B
#define INS_DCBZ 0x7c0007ec
#endif /* __ASM_KVM_BOOK3S_H__ */