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Message-ID: <87mt1mjhk3.ffs@tglx>
Date: Tue, 30 May 2023 11:26:52 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: "Kirill A. Shutemov" <kirill@...temov.name>
Cc: LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
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Subject: Re: [patch v3 31/36] x86/apic: Provide cpu_primary_thread mask
On Tue, May 30 2023 at 03:54, Kirill A. Shutemov wrote:
> On Mon, May 29, 2023 at 11:31:29PM +0300, Kirill A. Shutemov wrote:
>> Disabling parallel bringup helps. I didn't look closer yet. If you have
>> an idea let me know.
>
> Okay, it crashes around .Lread_apicid due to touching MSRs that trigger #VE.
>
> Looks like the patch had no intention to enable parallel bringup on TDX.
>
> + * Intel-TDX has a secure RDMSR hypercall, but that needs to be
> + * implemented seperately in the low level startup ASM code.
>
> But CC_ATTR_GUEST_STATE_ENCRYPT that used to filter it out is
> SEV-ES-specific thingy and doesn't cover TDX. I don't think we have an
> attribute that fits nicely here.
Bah. That sucks.
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