On 19.04.2011, at 00:31, Scott Wood wrote:
> Signed-off-by: Scott Wood <scottwood@xxxxxxxxxxxxx>
> ---
> Documentation/kvm/api.txt | 6 +-
> arch/powerpc/include/asm/kvm.h | 184 +++++++++++++++++++++++++++++++++++
> arch/powerpc/include/asm/kvm_44x.h | 1 -
> arch/powerpc/include/asm/kvm_e500.h | 1 +
> arch/powerpc/include/asm/kvm_host.h | 3 +
> arch/powerpc/include/asm/kvm_ppc.h | 9 ++
> arch/powerpc/kvm/44x.c | 10 ++
> arch/powerpc/kvm/booke.c | 153 ++++++++++++++++++++++++++++-
> arch/powerpc/kvm/e500.c | 75 ++++++++++++++
> arch/powerpc/kvm/e500_emulate.c | 5 +-
> arch/powerpc/kvm/e500_tlb.c | 8 ++
> arch/powerpc/kvm/emulate.c | 13 ++-
> arch/powerpc/kvm/powerpc.c | 4 +
> include/linux/kvm.h | 1 +
> 14 files changed, 460 insertions(+), 13 deletions(-)
>
> diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt
> index 1b9eaa7..f64c41f 100644
> --- a/Documentation/kvm/api.txt
> +++ b/Documentation/kvm/api.txt
> @@ -261,7 +261,7 @@ See KVM_GET_REGS for the data structure.
> 4.13 KVM_GET_SREGS
>
> Capability: basic
> -Architectures: x86
> +Architectures: x86, ppc
> Type: vcpu ioctl
> Parameters: struct kvm_sregs (out)
> Returns: 0 on success, -1 on error
> @@ -279,6 +279,8 @@ struct kvm_sregs {
> __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
> };
>
> +/* ppc -- see arch/powerpc/include/asm/kvm.h */
> +
> interrupt_bitmap is a bitmap of pending external interrupts. At most
> one bit may be set. This interrupt has been acknowledged by the APIC
> but not yet injected into the cpu core.
> @@ -286,7 +288,7 @@ but not yet injected into the cpu core.
> 4.14 KVM_SET_SREGS
>
> Capability: basic
> -Architectures: x86
> +Architectures: x86, ppc
> Type: vcpu ioctl
> Parameters: struct kvm_sregs (in)
> Returns: 0 on success, -1 on error
> diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h
> index 18ea696..d2ca5ed 100644
> --- a/arch/powerpc/include/asm/kvm.h
> +++ b/arch/powerpc/include/asm/kvm.h
> @@ -45,6 +45,114 @@ struct kvm_regs {
> __u64 gpr[32];
> };
>
> +#define KVM_SREGS_E_IMPL_NONE 0
> +#define KVM_SREGS_E_IMPL_FSL 1
> +
> +#define KVM_SREGS_E_FSL_PIDn (1 << 0) /* PID1/PID2 */
> +
> +/*
> + * Feature bits indicate which sections of the sregs struct are valid,
> + * both in KVM_GET_SREGS and KVM_SET_SREGS. On KVM_SET_SREGS, registers
> + * corresponding to unset feature bits will not be modified. This allows
> + * restoring a checkpoint made without that feature, while keeping the
> + * default values of the new registers.
> + *
> + * KVM_SREGS_E_BASE contains:
> + * CSRR0/1 (refers to SRR2/3 on 40x)
> + * ESR
> + * DEAR
> + * MCSR
> + * TSR
> + * TCR
> + * DEC
> + * TB
> + * VRSAVE (USPRG0)
> + */
> +#define KVM_SREGS_E_BASE (1 << 0)
> +
> +/*
> + * KVM_SREGS_E_ARCH206 contains:
> + *
> + * PIR
> + * MCSRR0/1
> + * DECAR
> + * IVPR
> + */
> +#define KVM_SREGS_E_ARCH206 (1 << 1)
> +
> +/*
> + * Contains EPCR, plus the upper half of 64-bit registers
> + * that are 32-bit on 32-bit implementations.
> + */
> +#define KVM_SREGS_E_64 (1 << 2)
> +
> +#define KVM_SREGS_E_SPRG8 (1 << 3)
> +#define KVM_SREGS_E_MCIVPR (1 << 4)
> +
> +/*
> + * IVORs are used -- contains IVOR0-15, plus additional IVORs
> + * in combination with an appropriate feature bit.
> + */
> +#define KVM_SREGS_E_IVOR (1 << 5)
> +
> +/*
> + * Contains MAS0-4, MAS6-7, TLBnCFG, MMUCFG.
> + * Also TLBnPS if MMUCFG[MAVN] = 1.
> + */
> +#define KVM_SREGS_E_ARCH206_MMU (1 << 6)
> +
> +/* DBSR, DBCR, IAC, DAC, DVC */
> +#define KVM_SREGS_E_DEBUG (1 << 7)
> +
> +/* Enhanced debug -- DSRR0/1, SPRG9 */
> +#define KVM_SREGS_E_ED (1 << 8)
> +
> +/* Embedded Floating Point (SPE) -- IVOR32-34 if KVM_SREGS_E_IVOR */
> +#define KVM_SREGS_E_SPE (1 << 9)
> +
> +/* External Proxy (EXP) -- EPR */
> +#define KVM_SREGS_EXP (1 << 10)
> +
> +/* External PID (E.PD) -- EPSC/EPLC */
> +#define KVM_SREGS_E_PD (1 << 11)
> +
> +/* Processor Control (E.PC) -- IVOR36-37 if KVM_SREGS_E_IVOR */
> +#define KVM_SREGS_E_PC (1 << 12)
> +
> +/* Page table (E.PT) -- EPTCFG */
> +#define KVM_SREGS_E_PT (1 << 13)
> +
> +/* Embedded Performance Monitor (E.PM) -- IVOR35 if KVM_SREGS_E_IVOR */
> +#define KVM_SREGS_E_PM (1 << 14)
> +
> +/*
> + * Special updates:
> + *
> + * Some registers may change even while a vcpu is not running.
> + * To avoid losing these changes, by default these registers are
> + * not updated by KVM_SET_SREGS. To force an update, set the bit
> + * in u.e.update_special corresponding to the register to be updated.
> + *
> + * The update_special field is zero on return from KVM_GET_SREGS.
> + *
> + * When restoring a checkpoint, the caller can set update_special
> + * to 0xffffffff to ensure that everything is restored, even new features
> + * that the caller doesn't know about.
> + */
> +#define KVM_SREGS_E_UPDATE_MCSR (1 << 0)
> +#define KVM_SREGS_E_UPDATE_TSR (1 << 1)
> +#define KVM_SREGS_E_UPDATE_DEC (1 << 2)
> +#define KVM_SREGS_E_UPDATE_DBSR (1 << 3)
> +
> +/*
> + * In KVM_SET_SREGS, reserved/pad fields must be left untouched from a
> + * previous KVM_GET_REGS.
> + *
> + * Unless otherwise indicated, setting any register with KVM_SET_SREGS
> + * directly sets its value. It does not trigger any special semantics such
> + * as write-one-to-clear. Calling KVM_SET_SREGS on an unmodified struct
> + * just received from KVM_GET_SREGS is always a no-op.
> + */
> struct kvm_sregs {
> __u32 pvr;
> union {
> @@ -62,6 +170,82 @@ struct kvm_sregs {
> __u64 dbat[8];
> } ppc32;
> } s;
> + struct {
> + union {
> + struct { /* KVM_SREGS_E_IMPL_FSL */
> + __u32 features; /* KVM_SREGS_E_FSL_ */
> + __u32 svr;
> + __u64 mcar;
> + __u32 hid0;
> +
> + /* KVM_SREGS_E_FSL_PIDn */
> + __u32 pid1, pid2;
> + } fsl;
> + __u8 pad[256];
> + } impl;
> +
> + __u32 features; /* KVM_SREGS_E_ */
> + __u32 impl_id; /* KVM_SREGS_E_IMPL_ */
> + __u32 update_special; /* KVM_SREGS_E_UPDATE_ */
> + __u32 pir; /* read-only */
> + __u64 sprg8;
> + __u64 sprg9; /* E.ED */
> + __u64 csrr0;
> + __u64 dsrr0; /* E.ED */
> + __u64 mcsrr0;
> + __u32 csrr1;
> + __u32 dsrr1; /* E.ED */
> + __u32 mcsrr1;
> + __u32 esr;
> + __u64 dear;
> + __u64 ivpr;
> + __u64 mcivpr;
> + __u64 mcsr; /* KVM_SREGS_E_UPDATE_MCSR */
> +
> + __u32 tsr; /* KVM_SREGS_E_UPDATE_TSR */
> + __u32 tcr;
> + __u32 decar;
> + __u32 dec; /* KVM_SREGS_E_UPDATE_DEC */
> +
> + /*
> + * Userspace can read TB directly, but the
> + * value reported here is consistent with "dec".
> + *
> + * Read-only.
> + */
> + __u64 tb;
> +
> + __u32 dbsr; /* KVM_SREGS_E_UPDATE_DBSR */
> + __u32 dbcr[3];
> + __u32 iac[4];
> + __u32 dac[2];
> + __u32 dvc[2];
> + __u8 num_iac; /* read-only */
> + __u8 num_dac; /* read-only */
> + __u8 num_dvc; /* read-only */
> + __u8 pad;
> +
> + __u32 epr; /* EXP */
> + __u32 vrsave; /* a.k.a. USPRG0 */
> + __u32 epcr; /* KVM_SREGS_E_64 */
> +
> + __u32 mas0;
> + __u32 mas1;
> + __u64 mas2;
> + __u64 mas7_3;
> + __u32 mas4;
> + __u32 mas6;
> +
> + __u32 ivor_low[16]; /* IVOR0-15 */
> + __u32 ivor_high[18]; /* IVOR32+, plus room to expand */
> +
> + __u32 mmucfg; /* read-only */
> + __u32 eptcfg; /* E.PT, read-only */
> + __u32 tlbcfg[4];/* read-only */
> + __u32 tlbps[4]; /* read-only */
> +
> + __u32 eplc, epsc; /* E.PD */
> + } e;
> __u8 pad[1020];
> } u;
> };
> diff --git a/arch/powerpc/include/asm/kvm_44x.h b/arch/powerpc/include/asm/kvm_44x.h
> index d22d399..a0e5761 100644
> --- a/arch/powerpc/include/asm/kvm_44x.h
> +++ b/arch/powerpc/include/asm/kvm_44x.h
> @@ -61,7 +61,6 @@ static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
> return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
> }
>
> -void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 new_pid);
> void kvmppc_44x_tlb_put(struct kvm_vcpu *vcpu);
> void kvmppc_44x_tlb_load(struct kvm_vcpu *vcpu);
>
> diff --git a/arch/powerpc/include/asm/kvm_e500.h b/arch/powerpc/include/asm/kvm_e500.h
> index bb2a089..7a2a565 100644
> --- a/arch/powerpc/include/asm/kvm_e500.h
> +++ b/arch/powerpc/include/asm/kvm_e500.h
> @@ -59,6 +59,7 @@ struct kvmppc_vcpu_e500 {
> u32 hid1;
> u32 tlb0cfg;
> u32 tlb1cfg;
> + u64 mcar;
>
> struct kvm_vcpu vcpu;
> };
> diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
> index 34b8732..c4ce105 100644
> --- a/arch/powerpc/include/asm/kvm_host.h
> +++ b/arch/powerpc/include/asm/kvm_host.h
> @@ -239,6 +239,9 @@ struct kvm_vcpu_arch {
> ulong csrr1;
> ulong dsrr0;
> ulong dsrr1;
> + ulong mcsrr0;
> + ulong mcsrr1;
> + ulong mcsr;
> ulong esr;
> u32 dec;
> u32 decar;
> diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
> index ecb3bc7..9345238 100644
> --- a/arch/powerpc/include/asm/kvm_ppc.h
> +++ b/arch/powerpc/include/asm/kvm_ppc.h
> @@ -61,6 +61,7 @@ extern int kvmppc_emulate_instruction(struct kvm_run *run,
> struct kvm_vcpu *vcpu);
> extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
> extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
> +extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
>
> /* Core-specific hooks */
>
> @@ -142,4 +143,12 @@ static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
> return r;
> }
>
> +void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
> +int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
> +
> +void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
> +int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
> +
> +void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
> +
> #endif /* __POWERPC_KVM_PPC_H__ */
> diff --git a/arch/powerpc/kvm/44x.c b/arch/powerpc/kvm/44x.c
> index 74d0e74..da3a122 100644
> --- a/arch/powerpc/kvm/44x.c
> +++ b/arch/powerpc/kvm/44x.c
> @@ -107,6 +107,16 @@ int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
> return 0;
> }
>
> +void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
> +{
> + kvmppc_get_sregs_ivor(vcpu, sregs);
> +}
> +
> +int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
> +{
> + return kvmppc_set_sregs_ivor(vcpu, sregs);
> +}
> +
> struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
> {
> struct kvmppc_vcpu_44x *vcpu_44x;
> diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
> index 965e1d8..610e68b 100644
> --- a/arch/powerpc/kvm/booke.c
> +++ b/arch/powerpc/kvm/booke.c
> @@ -651,6 +651,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
> kvmppc_set_msr(vcpu, regs->msr);
> vcpu->arch.shared->srr0 = regs->srr0;
> vcpu->arch.shared->srr1 = regs->srr1;
> + kvmppc_set_pid(vcpu, regs->pid);
> vcpu->arch.shared->sprg0 = regs->sprg0;
> vcpu->arch.shared->sprg1 = regs->sprg1;
> vcpu->arch.shared->sprg2 = regs->sprg2;
> @@ -666,16 +667,164 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
> return 0;
> }
>
> +static void get_sregs_base(struct kvm_vcpu *vcpu,
> + struct kvm_sregs *sregs)
> +{
> + u64 tb = get_tb();
> +
> + sregs->u.e.features |= KVM_SREGS_E_BASE;
> +
> + sregs->u.e.csrr0 = vcpu->arch.csrr0;
> + sregs->u.e.csrr1 = vcpu->arch.csrr1;
> + sregs->u.e.mcsr = vcpu->arch.mcsr;
> + sregs->u.e.esr = vcpu->arch.esr;
> + sregs->u.e.dear = vcpu->arch.shared->dar;
> + sregs->u.e.tsr = vcpu->arch.tsr;
> + sregs->u.e.tcr = vcpu->arch.tcr;
> + sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
> + sregs->u.e.tb = tb;
> + sregs->u.e.vrsave = vcpu->arch.vrsave;
> +}
> +
> +static int set_sregs_base(struct kvm_vcpu *vcpu,
> + struct kvm_sregs *sregs)
> +{
> + if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
> + return 0;
> +
> + vcpu->arch.csrr0 = sregs->u.e.csrr0;
> + vcpu->arch.csrr1 = sregs->u.e.csrr1;
> + vcpu->arch.mcsr = sregs->u.e.mcsr;
> + vcpu->arch.esr = sregs->u.e.esr;
> + vcpu->arch.shared->dar = sregs->u.e.dear;
> + vcpu->arch.vrsave = sregs->u.e.vrsave;
> + vcpu->arch.tcr = sregs->u.e.tcr;
> +
> + if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC)
> + vcpu->arch.dec = sregs->u.e.dec;
> +
> + kvmppc_emulate_dec(vcpu);
Only need to update dec if UPDATE_DEC, no? Also, why is UPDATE_DEC a subcheck from E_BASE?
> +
> + if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) {
> + /*
> + * FIXME: existing KVM timer handling is incomplete.
> + * TSR cannot be read by the guest, and its value in
> + * vcpu->arch is always zero. For now, just handle
> + * the case where the caller is trying to inject a
> + * decrementer interrupt.
> + */
> +
> + if ((sregs->u.e.tsr & TSR_DIS) &&
> + (vcpu->arch.tcr & TCR_DIE))
> + kvmppc_core_queue_dec(vcpu);
> + }
> +
> + return 0;
> +}
> +
> +static void get_sregs_arch206(struct kvm_vcpu *vcpu,
> + struct kvm_sregs *sregs)
> +{
> + sregs->u.e.features |= KVM_SREGS_E_ARCH206;
> +
> + sregs->u.e.pir = 0;
> + sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
> + sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
> + sregs->u.e.decar = vcpu->arch.decar;
> + sregs->u.e.ivpr = vcpu->arch.ivpr;
> +}
> +
> +static int set_sregs_arch206(struct kvm_vcpu *vcpu,
> + struct kvm_sregs *sregs)
> +{
> + if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
> + return 0;
> +
> + if (sregs->u.e.pir != 0)
> + return -EINVAL;
> +
> + vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
> + vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
> + vcpu->arch.decar = sregs->u.e.decar;
> + vcpu->arch.ivpr = sregs->u.e.ivpr;
> +
> + return 0;
> +}
> +
> +void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
> +{
> + sregs->u.e.features |= KVM_SREGS_E_IVOR;
> +
> + sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
> + sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
> + sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
> + sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
> + sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
> + sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
> + sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
> + sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
> + sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
> + sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
> + sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
> + sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
> + sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
> + sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
> + sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
> + sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
> +}
> +
> +int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
> +{
> + if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
> + return 0;
> +
> + vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
> + vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
> +
> + return 0;
> +}
> +
> int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
> struct kvm_sregs *sregs)
> {
> - return -ENOTSUPP;
> + sregs->pvr = vcpu->arch.pvr;
> +
> + get_sregs_base(vcpu, sregs);
> + get_sregs_arch206(vcpu, sregs);
> + kvmppc_core_get_sregs(vcpu, sregs);
> + return 0;
> }
>
> int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
> struct kvm_sregs *sregs)
> {
> - return -ENOTSUPP;
> + int ret;
> +
> + vcpu->arch.pvr = sregs->pvr;
This should contain a check for now to see if sregs->pvr == host pvr. We don't do cross virtualization on booke yet.
The rest looks very nice :).
Alex
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