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Re: Assertion '!is_idle_vcpu(v)' failed after 'Remove fully_eager_fpu' commit on EFI
- To: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 15 Jun 2026 18:02:45 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 15 Jun 2026 17:03:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15/06/2026 3:39 pm, Anthony PERARD wrote:
> [06Ah 0106 001h] RTC Day Alarm Index : 0D
> [06Bh 0107 001h] RTC Month Alarm Index : 00
> [06Ch 0108 001h] RTC Century Index : 32
> [06Dh 0109 002h] Boot Flags (decoded below) : 0033
> Legacy Devices Supported (V2) : 1
> 8042 Present on ports 60/64 (V2) : 1
> VGA Not Present (V4) : 0
> MSI Not Supported (V4) : 0
> PCIe ASPM Not Supported (V4) : 1
> CMOS RTC Not Present (V5) : 1
> [06Fh 0111 001h] Reserved : 00
> [070h 0112 004h] Flags (decoded below) : 000004A5
> WBINVD instruction is operational (V1) : 1
> WBINVD flushes all caches (V1) : 0
> All CPUs support C1 (V1) : 1
> C2 works on MP system (V1) : 0
> Control Method Power Button (V1) : 0
> Control Method Sleep Button (V1) : 1
> RTC wake not in fixed reg space (V1) : 0
> RTC can wake system from S4 (V1) : 1
There's 3 pieces of information on here which confirm an RTC is
present. Setting RTC_NOT_PRESENT is clearly a bug.
We should probably have a quirk to ignore RTC_NOT_PRESENT on this system.
~Andrew
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