From: Anton Blanchard Date: Wed, 8 Jan 2014 10:25:30 +0000 (+1100) Subject: KVM: PPC: Book3S HV: Basic little-endian guest support X-Git-Tag: v3.14-rc1~26^2^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d682916a381ac7c8eb965c10ab64bc7cc2f18647;p=pandora-kernel.git KVM: PPC: Book3S HV: Basic little-endian guest support We create a guest MSR from scratch when delivering exceptions in a few places. Instead of extracting LPCR[ILE] and inserting it into MSR_LE each time, we simply create a new variable intr_msr which contains the entire MSR to use. For a little-endian guest, userspace needs to set the ILE (interrupt little-endian) bit in the LPCR for each vcpu (or at least one vcpu in each virtual core). [paulus@samba.org - removed H_SET_MODE implementation from original version of the patch, and made kvmppc_set_lpcr update vcpu->arch.intr_msr.] Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras Signed-off-by: Alexander Graf --- diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index d161bc09153b..7726a3bc8ff0 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -636,6 +636,7 @@ struct kvm_vcpu_arch { spinlock_t tbacct_lock; u64 busy_stolen; u64 busy_preempt; + unsigned long intr_msr; #endif }; diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 239a857f1141..a60a2fdae5bd 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -480,6 +480,7 @@ int main(void) DEFINE(VCPU_DAR, offsetof(struct kvm_vcpu, arch.shregs.dar)); DEFINE(VCPU_VPA, offsetof(struct kvm_vcpu, arch.vpa.pinned_addr)); DEFINE(VCPU_VPA_DIRTY, offsetof(struct kvm_vcpu, arch.vpa.dirty)); + DEFINE(VCPU_INTR_MSR, offsetof(struct kvm_vcpu, arch.intr_msr)); #endif #ifdef CONFIG_PPC_BOOK3S DEFINE(VCPU_VCPUID, offsetof(struct kvm_vcpu, vcpu_id)); Reading git-diff-tree failed