On 03/12/2015 06:29, roy.qing.li@xxxxxxxxx wrote: > From: Li RongQing <roy.qing.li@xxxxxxxxx> > > POSTED_INTR_NV is 16bit, should not use 64bit write function > > [ 5311.676074] vmwrite error: reg 3 value 0 (err 12) > [ 5311.680001] CPU: 49 PID: 4240 Comm: qemu-system-i38 Tainted: G I 4.1.13-WR8.0.0.0_standard #1 > [ 5311.689343] Hardware name: Intel Corporation S2600WT2/S2600WT2, BIOS SE5C610.86B.01.01.0008.021120151325 02/11/2015 > [ 5311.699550] 00000000 00000000 e69a7e1c c1950de1 00000000 e69a7e38 fafcff45 fafebd24 > [ 5311.706924] 00000003 00000000 0000000c b6a06dfa e69a7e40 fafcff79 e69a7eb0 fafd5f57 > [ 5311.714296] e69a7ec0 c1080600 00000000 00000001 c0e18018 000001be 00000000 00000b43 > [ 5311.721651] Call Trace: > [ 5311.722942] [<c1950de1>] dump_stack+0x4b/0x75 > [ 5311.726467] [<fafcff45>] vmwrite_error+0x35/0x40 [kvm_intel] > [ 5311.731444] [<fafcff79>] vmcs_writel+0x29/0x30 [kvm_intel] > [ 5311.736228] [<fafd5f57>] vmx_create_vcpu+0x337/0xb90 [kvm_intel] > [ 5311.741600] [<c1080600>] ? dequeue_task_fair+0x2e0/0xf60 > [ 5311.746197] [<faf3b9ca>] kvm_arch_vcpu_create+0x3a/0x70 [kvm] > [ 5311.751278] [<faf29e9d>] kvm_vm_ioctl+0x14d/0x640 [kvm] > [ 5311.755771] [<c1129d44>] ? free_pages_prepare+0x1a4/0x2d0 > [ 5311.760455] [<c13e2842>] ? debug_smp_processor_id+0x12/0x20 > [ 5311.765333] [<c10793be>] ? sched_move_task+0xbe/0x170 > [ 5311.769621] [<c11752b3>] ? kmem_cache_free+0x213/0x230 > [ 5311.774016] [<faf29d50>] ? kvm_set_memory_region+0x60/0x60 [kvm] > [ 5311.779379] [<c1199fa2>] do_vfs_ioctl+0x2e2/0x500 > [ 5311.783285] [<c11752b3>] ? kmem_cache_free+0x213/0x230 > [ 5311.787677] [<c104dc73>] ? __mmdrop+0x63/0xd0 > [ 5311.791196] [<c104dc73>] ? __mmdrop+0x63/0xd0 > [ 5311.794712] [<c104dc73>] ? __mmdrop+0x63/0xd0 > [ 5311.798234] [<c11a2ed7>] ? __fget+0x57/0x90 > [ 5311.801559] [<c11a2f72>] ? __fget_light+0x22/0x50 > [ 5311.805464] [<c119a240>] SyS_ioctl+0x80/0x90 > [ 5311.808885] [<c1957d30>] sysenter_do_call+0x12/0x12 > [ 5312.059280] kvm: zapping shadow pages for mmio generation wraparound > [ 5313.678415] kvm [4231]: vcpu0 disabled perfctr wrmsr: 0xc2 data 0xffff > [ 5313.726518] kvm [4231]: vcpu0 unhandled rdmsr: 0x570 > > Signed-off-by: Li RongQing <roy.qing.li@xxxxxxxxx> > Cc: Yang Zhang <yang.z.zhang@xxxxxxxxx> > --- > arch/x86/kvm/vmx.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c > index 5eb56ed..418e084 100644 > --- a/arch/x86/kvm/vmx.c > +++ b/arch/x86/kvm/vmx.c > @@ -4780,7 +4780,7 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx) > > vmcs_write16(GUEST_INTR_STATUS, 0); > > - vmcs_write64(POSTED_INTR_NV, POSTED_INTR_VECTOR); > + vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR); > vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc))); > } > > @@ -9505,7 +9505,7 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) > */ > vmx->nested.posted_intr_nv = vmcs12->posted_intr_nv; > vmx->nested.pi_pending = false; > - vmcs_write64(POSTED_INTR_NV, POSTED_INTR_VECTOR); > + vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR); > vmcs_write64(POSTED_INTR_DESC_ADDR, > page_to_phys(vmx->nested.pi_desc_page) + > (unsigned long)(vmcs12->posted_intr_desc_addr & > Indeed this is a problem for 32-bit hosts. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
