Re: [kvm-unit-tests PATCH v1] x86: efi: set up the IDT before accessing MSRs.

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On Thu, Oct 13, 2022, Vasant Karasulli wrote:
> Hi Sean,
> 
> > Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> >
> > >  lib/x86/setup.c | 20 ++++++++++++--------
> > >  1 file changed, 12 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/lib/x86/setup.c b/lib/x86/setup.c
> > > index 7df0256..712e292 100644
> > > --- a/lib/x86/setup.c
> > > +++ b/lib/x86/setup.c
> > > @@ -192,8 +192,6 @@ static void setup_segments64(void)
> > >  	write_gs(KERNEL_DS);
> > >  	write_ss(KERNEL_DS);
> > >
> > > -	/* Setup percpu base */
> > > -	wrmsr(MSR_GS_BASE, (u64)&__percpu_data[pre_boot_apic_id()]);
> > >
> > >  	/*
> > >  	 * Update the code segment by putting it on the stack before the return
> > > @@ -322,7 +320,7 @@ efi_status_t setup_efi(efi_bootinfo_t *efi_bootinfo)
> > >  		}
> > >  		return status;
> > >  	}
> > > -
> > > +
> >
> > Huh.  This causes a conflict for me.  My local repo has a tab here that is
> > presumably being removed, but this patch doesn't have anything.  If I manually
> > add back the tab, all is well.  I suspect your client may be stripping trailing
> > whitespace.
> 
> Yes, I think my client was stripping trailing whitespaces. Do you want me
> to send a new version of the patch with that formatting?

No need, I'll put together a KUT PULL request next unless Paolo beats me to the
punch.



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