Re: Linux 4.18.1

Re: Linux 4.18.1

[Adam Borowski]

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Hi!

On Thu, Aug 16, 2018 at 12:14:29PM +0200, Greg KH wrote:
> I'm announcing the release of the 4.18.1 kernel.

I'm afraid that I get a build failure; v4.18 is ok, v4.18.1 fails with:

ld: arch/x86/kvm/x86.o: in function `kvm_get_arch_capabilities':
(.text+0x43b2): undefined reference to `l1tf_vmx_mitigation'

gcc 8.2.0-4, as shipped in Debian unstable.
.config attached.


Meow!
-- 
⢀⣴⠾⠻⢶⣦⠀ What Would Jesus Do, MUD/MMORPG edition:
⣾⠁⢰⠒⠀⣿⡁ • multiplay with an admin char to benefit your mortal [Mt3:16-17]
⢿⡄⠘⠷⠚⠋⠀ • abuse item cloning bugs [Mt14:17-20, Mt15:34-37]
⠈⠳⣄⠀⠀⠀⠀ • use glitches to walk on water [Mt14:25-26]

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Re: Linux 4.18.1

[Sven Joachim]

On 2018-08-16 15:05 +0200, Adam Borowski wrote:

> On Thu, Aug 16, 2018 at 12:14:29PM +0200, Greg KH wrote:
>> I'm announcing the release of the 4.18.1 kernel.
>
> I'm afraid that I get a build failure; v4.18 is ok, v4.18.1 fails with:
>
> ld: arch/x86/kvm/x86.o: in function `kvm_get_arch_capabilities':
> (.text+0x43b2): undefined reference to `l1tf_vmx_mitigation'

Same here and also in 4.17.15, but not in Linus' tree.

> .config attached.

Probably relevant:

> CONFIG_KVM=y
> # CONFIG_KVM_INTEL is not set
> CONFIG_KVM_AMD=y

I have CONFIG_KVM{,AMD}=m and CONFIG_KVM_INTEL is not set either.

Cheers,
       Sven

Re: Linux 4.18.1

[Greg KH]

On Thu, Aug 16, 2018 at 03:59:58PM +0200, Sven Joachim wrote:
> On 2018-08-16 15:05 +0200, Adam Borowski wrote:
> 
> > On Thu, Aug 16, 2018 at 12:14:29PM +0200, Greg KH wrote:
> >> I'm announcing the release of the 4.18.1 kernel.
> >
> > I'm afraid that I get a build failure; v4.18 is ok, v4.18.1 fails with:
> >
> > ld: arch/x86/kvm/x86.o: in function `kvm_get_arch_capabilities':
> > (.text+0x43b2): undefined reference to `l1tf_vmx_mitigation'
> 
> Same here and also in 4.17.15, but not in Linus' tree.
> 
> > .config attached.
> 
> Probably relevant:
> 
> > CONFIG_KVM=y
> > # CONFIG_KVM_INTEL is not set
> > CONFIG_KVM_AMD=y
> 
> I have CONFIG_KVM{,AMD}=m and CONFIG_KVM_INTEL is not set either.

This is fixed in my queue, if it really bothers you, apply commit
1eb46908b35d ("x86/l1tf: Fix build error seen if CONFIG_KVM_INTEL is
disabled") to your tree, it will be in the next round of stable kernel
releases.

thanks,

greg k-h

Re: Linux 4.18.1

[Adam Borowski]

On Thu, Aug 16, 2018 at 05:11:21PM +0200, Greg KH wrote:
> On Thu, Aug 16, 2018 at 03:59:58PM +0200, Sven Joachim wrote:
> > On 2018-08-16 15:05 +0200, Adam Borowski wrote:
> > > I'm afraid that I get a build failure; v4.18 is ok, v4.18.1 fails with:
> > >
> > > ld: arch/x86/kvm/x86.o: in function `kvm_get_arch_capabilities':
> > > (.text+0x43b2): undefined reference to `l1tf_vmx_mitigation'
> > 
> > Same here and also in 4.17.15, but not in Linus' tree.
> > 
> > > CONFIG_KVM=y
> > > # CONFIG_KVM_INTEL is not set
> > > CONFIG_KVM_AMD=y
> > 
> > I have CONFIG_KVM{,AMD}=m and CONFIG_KVM_INTEL is not set either.
> 
> This is fixed in my queue, if it really bothers you, apply commit
> 1eb46908b35d ("x86/l1tf: Fix build error seen if CONFIG_KVM_INTEL is
> disabled") to your tree, it will be in the next round of stable kernel
> releases.

Probably obvious, but: cherry-picking that commit fixes the problem, it
builds, boots and works ok.

Thanks!


Meow.
-- 
⢀⣴⠾⠻⢶⣦⠀ What Would Jesus Do, MUD/MMORPG edition:
⣾⠁⢰⠒⠀⣿⡁ • multiplay with an admin char to benefit your mortal [Mt3:16-17]
⢿⡄⠘⠷⠚⠋⠀ • abuse item cloning bugs [Mt14:17-20, Mt15:34-37]
⠈⠳⣄⠀⠀⠀⠀ • use glitches to walk on water [Mt14:25-26]