From: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
To: "pve-devel@lists.proxmox.com" <pve-devel@lists.proxmox.com>,
"aderumier@odiso.com" <aderumier@odiso.com>,
"f.ebner@proxmox.com" <f.ebner@proxmox.com>
Subject: Re: [pve-devel] [PATCH v4 qemu-server 1/1] cpuconfig: add new x86-64-vX models
Date: Wed, 7 Jun 2023 11:25:16 +0000 [thread overview]
Message-ID: <124629aab6c97fbcc601b59a64084098a842864a.camel@groupe-cyllene.com> (raw)
In-Reply-To: <c00e1a5a2d9752cddb0ab527fdaae191d293050e.camel@groupe-cyllene.com>
>
> but also newer model depending of firmware revision
>
> "target/i386: EPYC-Rome model without XSAVES"
> https://github.com/qemu/qemu/commit/fb00aa61267c8b9c57a2d1a1fa1e336d02e3bcd1
>
>
>
seem that linux kernel have disable it recently for zen1/2
https://www.spinics.net/lists/linux-tip-commits/msg61863.html
+ /*
+ * Work around Erratum 1386. The XSAVES instruction
malfunctions in
+ * certain circumstances on Zen1/2 uarch, and not all parts
have had
+ * updated microcode at the time of writing (March 2023).
+ *
+ * Affected parts all have no supervisor XSAVE states, meaning
that
+ * the XSAVEC instruction (which works fine) is equivalent.
+ */
+ clear_cpu_cap(c, X86_FEATURE_XSAVES);
}
next prev parent reply other threads:[~2023-06-07 11:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-02 10:05 [pve-devel] [PATCH-SERIES v4 qemu-server/manager] add and set x86-64-v2-AES as default model for new vms Alexandre Derumier
2023-06-02 10:05 ` [pve-devel] [PATCH v4 qemu-server 1/1] cpuconfig: add new x86-64-vX models Alexandre Derumier
2023-06-06 12:09 ` Fiona Ebner
2023-06-06 13:36 ` DERUMIER, Alexandre
2023-06-07 8:31 ` Fiona Ebner
2023-06-07 10:57 ` DERUMIER, Alexandre
2023-06-07 11:25 ` DERUMIER, Alexandre [this message]
2023-06-07 11:48 ` Fiona Ebner
2023-06-07 14:11 ` DERUMIER, Alexandre
2023-06-07 15:29 ` DERUMIER, Alexandre
2023-06-02 10:05 ` [pve-devel] [PATCH v2 pve-manager 1/1] qemu: processor : set x86-64-v2-AES as default cputype for create wizard Alexandre Derumier
2023-06-06 12:47 ` Fiona Ebner
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