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| author | Hollis Blanchard <hollisb@us.ibm.com> | 2008-04-16 23:28:07 -0500 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 18:21:37 +0300 |
| commit | b2312f059c893833de58876c74290511846cd208 (patch) | |
| tree | 6164572aeaf0761412af0ce860b031e126cebcba | |
| parent | 4baacfb0de53b05428c87d377fc8a3def4dc10e7 (diff) | |
| download | linux-b2312f059c893833de58876c74290511846cd208.tar.bz2 | |
KVM: ppc: Add DCR access information to struct kvm_run
Device Control Registers are essentially another address space found on PowerPC
4xx processors, analogous to PIO on x86. DCRs are always 32 bits, and can be
identified by a 32-bit number. We forward most DCR accesses to userspace for
emulation (with the exception of CPR0 registers, which can be read directly
for simplicity in timebase frequency determination).
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | include/linux/kvm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index f8e211d8ce88..a281afeddfbb 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -82,6 +82,7 @@ struct kvm_irqchip { #define KVM_EXIT_TPR_ACCESS 12 #define KVM_EXIT_S390_SIEIC 13 #define KVM_EXIT_S390_RESET 14 +#define KVM_EXIT_DCR 15 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */ struct kvm_run { @@ -161,6 +162,12 @@ struct kvm_run { #define KVM_S390_RESET_CPU_INIT 8 #define KVM_S390_RESET_IPL 16 __u64 s390_reset_flags; + /* KVM_EXIT_DCR */ + struct { + __u32 dcrn; + __u32 data; + __u8 is_write; + } dcr; /* Fix the size of the union. */ char padding[256]; }; |