regression bisected; KVM: entry failed, hardware error 0x80000021
With v3.19-rc1 when I run qemu-system-x86_64 -machine pc,accel=kvm I get: KVM: entry failed, hardware error 0x8021 If you're running a guest on an Intel machine without unrestricted mode support, the failure can be most likely due to the guest entering an invalid state for Intel VT. For example, the guest maybe running in big real mode which is not supported on less recent Intel processors. EAX= EBX= ECX= EDX=0663 ESI= EDI= EBP= ESP= EIP=e05b EFL=00010002 [---] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES = 9300 CS =f000 000f 9b00 SS = 9300 DS = 9300 FS = 9300 GS = 9300 LDT= 8200 TR = 8b00 GDT= IDT= CR0=6010 CR2= CR3= CR4= DR0= DR1= DR2= DR3= DR6=0ff0 DR7=0400 EFER= Code=85 00 87 00 89 00 8b 00 00 00 86 00 88 00 8a 00 8c 00 00 90 2e 66 83 3e 30 6c 00 0f 85 e7 f2 31 c0 8e d0 66 bc 00 70 00 00 66 ba 31 2e 0f 00 e9 45 f1 This is with QEMU emulator version 2.1.2 (Debian 1:2.1+dfsg-11), Copyright (c) 2003-2008 Fabrice Bellard The host system is: cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz stepping: 10 microcode : 0xa0b ... flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority I bisected this back to: commit 34a1cd60d17f62c1f077c1478a6c2ca8c3d17af4 Author: Tiejun Chen tiejun.c...@intel.com Date: Tue Oct 28 10:14:48 2014 +0800 kvm: x86: vmx: move some vmx setting from vmx_init() to hardware_setup() Instead of vmx_init(), actually it would make reasonable sense to do anything specific to vmx hardware setting in vmx_x86_ops-hardware_setup(). Signed-off-by: Tiejun Chen tiejun.c...@intel.com Signed-off-by: Paolo Bonzini pbonz...@redhat.com reverting this commit appears to fix the issue, in so far that I can run kvm again without the aforementioned error, but I haven't tested it thoroughly beyond that. Let me know if you need more information or testing. -- Jamie Heilman http://audible.transient.net/~jamie/ -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] powerpc: powernv: Return to cpu offline loop when finished in KVM guest
arch/powerpc/kvm/built-in.o: In function `kvm_no_guest': arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x724): undefined reference to `power7_wakeup_loss' Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm: zapping shadow pages for mmio generation wraparound
On 21/12/2014 07:28, Michael Tokarev wrote: Has it not been decided to downgrade this message to KERN_DEBUG for some reason? I've just never gotten round to do it. I'll do it next week. What does this message mean anyway? Why this very rare case (according to comments in arch/x86/kvm/mmu.c) happens on this machine? It is rare, but we make it happen once per VM to try and avoid that it bitrots. Paolo -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] powerpc: powernv: Return to cpu offline loop when finished in KVM guest
On 21.12.14 15:13, Andreas Schwab wrote: arch/powerpc/kvm/built-in.o: In function `kvm_no_guest': arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x724): undefined reference to `power7_wakeup_loss' Ugh. We just removed support for 970 HV mode, but that obviously doesn't mean you can't compile in support for HV mode without enabling p7. Paul, what would you think of a patch that makes BOOK3S_HV depend on PPC_POWERNV? Alex -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] powerpc: powernv: Return to cpu offline loop when finished in KVM guest
On Sun, 2014-12-21 at 23:56 +0100, Alexander Graf wrote: On 21.12.14 15:13, Andreas Schwab wrote: arch/powerpc/kvm/built-in.o: In function `kvm_no_guest': arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x724): undefined reference to `power7_wakeup_loss' Ugh. We just removed support for 970 HV mode, but that obviously doesn't mean you can't compile in support for HV mode without enabling p7. Paul, what would you think of a patch that makes BOOK3S_HV depend on PPC_POWERNV? Paul's out until after Christmas I think, maybe later. That sounds reasonable to me though, it reflects reality, and we can always change it in future. cheers -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[question] Does is_guest_mode() == true mean in L1 (guest hypervisor)?
Hi, Does is_guest_mode() == true mean in L1 (guest hypervisor)? Thanks, Zhang Haoyu -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI
-Original Message- From: Paolo Bonzini [mailto:paolo.bonz...@gmail.com] On Behalf Of Paolo Bonzini Sent: Saturday, December 20, 2014 9:17 PM To: Wu, Feng; Paolo Bonzini; Zhang, Yang Z; Thomas Gleixner; Ingo Molnar; H. Peter Anvin; x...@kernel.org; Gleb Natapov; dw...@infradead.org; j...@8bytes.org; Alex Williamson; Jiang Liu Cc: io...@lists.linux-foundation.org; linux-ker...@vger.kernel.org; KVM list; Eric Auger Subject: Re: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI On 20/12/2014 00:48, Wu, Feng wrote: In my understanding, lowest priority interrupts are always delivered to a Single CPU, we need to find the right destination CPU from the cpumask. Yes, but which CPU however differs every time the interrupt is delivered. So the emulation here is a bit poor. For now, please limit PI to fixed interrupts. Do you mean we don't support Lowest priority interrupts? As I mentioned before, Lowest priority interrupts is widely used in Linux, so I think supporting lowest priority interrupts is very important for Linux guest OS. Do you have any ideas/suggestions about how to support Lowest priority interrupts for PI? Thanks a lot! Thanks, Feng Actually, we don't support posting broadcast/multicast interrupts, because the interrupt is associated with one Posted-interrupts descriptor, then one vCPU. Understood. Paolo -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
YOU HAVE WON!!
We are please to inform you of our end of year promotion award program held 21st December 2014,which have pronounce your email-address as the lucky winner of a total sum:of 250,000. CONTACT: The claim office/Email:postco...@luckymail.com,with your winning Serial-No:LE0031#11250PSNL. __ __ __ __ __ Postcodesloterij.nl WARNING!! This winning notification is expected to be read and/or used only by the individual(s) for whom it is intended.If you have received this electronic communication in error, please reply to the sender advising of the error in transmission and delete the original message FOR SECURITY REASON := = == = == = = = -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Does kvm friendly support GPT?
Hi, When I perform P2V from native servers with win2008 to kvm vm, some cases failed due to the physical disk was using GPT for partition, and QEMU doesn't support GPT by default. And, I see in below site that OVMF can be used to enable UEFI to support GPT, http://www.linux-kvm.org/page/OVMF But, it seems that OVMF is not stable enough for kvm. Any advises? Thanks, Zhang Haoyu -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: regression bisected; KVM: entry failed, hardware error 0x80000021
On 2014/12/21 20:46, Jamie Heilman wrote:
With v3.19-rc1 when I run qemu-system-x86_64 -machine pc,accel=kvm I
get:
KVM: entry failed, hardware error 0x8021
Looks some MSR writing issues such a failed entry.
If you're running a guest on an Intel machine without unrestricted mode
support, the failure can be most likely due to the guest entering an invalid
state for Intel VT. For example, the guest maybe running in big real mode
which is not supported on less recent Intel processors.
EAX= EBX= ECX= EDX=0663
ESI= EDI= EBP= ESP=
EIP=e05b EFL=00010002 [---] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES = 9300
CS =f000 000f 9b00
SS = 9300
DS = 9300
FS = 9300
GS = 9300
LDT= 8200
TR = 8b00
GDT=
IDT=
CR0=6010 CR2= CR3= CR4=
DR0= DR1= DR2=
DR3=
DR6=0ff0 DR7=0400
EFER=
And I don't see any obvious wrong as well. Any valuable info from dmesg?
Code=85 00 87 00 89 00 8b 00 00 00 86 00 88 00 8a 00 8c 00 00 90 2e 66 83 3e
30 6c 00 0f 85 e7 f2 31 c0 8e d0 66 bc 00 70 00 00 66 ba 31 2e 0f 00 e9 45 f1
This is with QEMU emulator version 2.1.2 (Debian 1:2.1+dfsg-11),
Copyright (c) 2003-2008 Fabrice Bellard
The host system is:
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
stepping: 10
microcode : 0xa0b
...
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor
ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm
tpr_shadow vnmi flexpriority
I bisected this back to:
commit 34a1cd60d17f62c1f077c1478a6c2ca8c3d17af4
Author: Tiejun Chen tiejun.c...@intel.com
Date: Tue Oct 28 10:14:48 2014 +0800
kvm: x86: vmx: move some vmx setting from vmx_init() to hardware_setup()
Instead of vmx_init(), actually it would make reasonable sense to do
anything specific to vmx hardware setting in vmx_x86_ops-hardware_setup().
This commit just reorders something but some MSR writing depend on
previous status.
Could you try this?
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index feb852b..96c84a8 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5840,49 +5840,6 @@ static __init int hardware_setup(void)
memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE);
memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE);
- vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
- vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
- vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
- vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
-
- memcpy(vmx_msr_bitmap_legacy_x2apic,
- vmx_msr_bitmap_legacy, PAGE_SIZE);
- memcpy(vmx_msr_bitmap_longmode_x2apic,
- vmx_msr_bitmap_longmode, PAGE_SIZE);
-
- if (enable_apicv) {
- for (msr = 0x800; msr = 0x8ff; msr++)
- vmx_disable_intercept_msr_read_x2apic(msr);
-
- /* According SDM, in x2apic mode, the whole id reg is used.
-* But in KVM, it only use the highest eight bits. Need to
-* intercept it */
- vmx_enable_intercept_msr_read_x2apic(0x802);
- /* TMCCT */
- vmx_enable_intercept_msr_read_x2apic(0x839);
- /* TPR */
- vmx_disable_intercept_msr_write_x2apic(0x808);
- /* EOI */
- vmx_disable_intercept_msr_write_x2apic(0x80b);
- /* SELF-IPI */
- vmx_disable_intercept_msr_write_x2apic(0x83f);
- }
-
- if (enable_ept) {
- kvm_mmu_set_mask_ptes(0ull,
- (enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
- (enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
- 0ull, VMX_EPT_EXECUTABLE_MASK);
- ept_set_mmio_spte_mask();
- kvm_enable_tdp();
- } else
- kvm_disable_tdp();
-
- update_ple_window_actual_max();
-
if (setup_vmcs_config(vmcs_config) 0) {
r = -EIO;
goto out7;
@@ -5945,6 +5902,49 @@ static __init int hardware_setup(void)
if (nested)
nested_vmx_setup_ctls_msrs();
+
Re: [PATCH] powerpc: powernv: Return to cpu offline loop when finished in KVM guest
arch/powerpc/kvm/built-in.o: In function `kvm_no_guest': arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x724): undefined reference to `power7_wakeup_loss' Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different. -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] powerpc: powernv: Return to cpu offline loop when finished in KVM guest
On Sun, 2014-12-21 at 23:56 +0100, Alexander Graf wrote: On 21.12.14 15:13, Andreas Schwab wrote: arch/powerpc/kvm/built-in.o: In function `kvm_no_guest': arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x724): undefined reference to `power7_wakeup_loss' Ugh. We just removed support for 970 HV mode, but that obviously doesn't mean you can't compile in support for HV mode without enabling p7. Paul, what would you think of a patch that makes BOOK3S_HV depend on PPC_POWERNV? Paul's out until after Christmas I think, maybe later. That sounds reasonable to me though, it reflects reality, and we can always change it in future. cheers -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
