From: "Daniel P. Berrangé" <berrange@redhat.com>
To: "Richard W.M. Jones" <rjones@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Lara Lazier <laramglazier@gmail.com>,
qemu-devel@nongnu.org
Subject: Re: [PULL 08/15] target/i386: Added consistency checks for CR4
Date: Tue, 31 Aug 2021 18:12:04 +0100 [thread overview]
Message-ID: <YS5i5AfLdc1wubLa@redhat.com> (raw)
In-Reply-To: <20210831170304.GA24819@redhat.com>
On Tue, Aug 31, 2021 at 06:03:04PM +0100, Richard W.M. Jones wrote:
> On Thu, Jul 22, 2021 at 05:36:05PM +0200, Paolo Bonzini wrote:
> > From: Lara Lazier <laramglazier@gmail.com>
> >
> > All MBZ bits in CR4 must be zero. (APM2 15.5)
> > Added reserved bitmask and added checks in both
> > helper_vmrun and helper_write_crN.
> >
> > Signed-off-by: Lara Lazier <laramglazier@gmail.com>
> > Message-Id: <20210721152651.14683-2-laramglazier@gmail.com>
> > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>
> FYI this commit causes a regression with -cpu max (regression analyzed
> by Daniel Berrange). See:
Specifically this commit breaks the ability to boot current fedora
kernels with --cpu max. Disabling 'la57' feature makes it work
again. Similarly enabling 'la57' on any named CPU model makes that
then break.
Regards,
Daniel
--
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next prev parent reply other threads:[~2021-08-31 17:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-22 15:35 [PULL 00/15] Misc bugfix patches for 2021-07-22 Paolo Bonzini
2021-07-22 15:35 ` [PULL 01/15] qemu-config: never call the callback after an error, fix leak Paolo Bonzini
2021-07-22 15:35 ` [PULL 02/15] qemu-config: fix memory leak on ferror() Paolo Bonzini
2021-07-22 15:36 ` [PULL 03/15] vl: Parse legacy default_machine_opts Paolo Bonzini
2021-07-22 15:36 ` [PULL 04/15] chardev-spice: add missing module_obj directive Paolo Bonzini
2021-07-22 17:41 ` Philippe Mathieu-Daudé
2021-07-22 15:36 ` [PULL 05/15] usb: fix usb-host dependency check Paolo Bonzini
2021-07-22 15:36 ` [PULL 06/15] qemu-config: restore "machine" in qmp_query_command_line_options() Paolo Bonzini
2021-07-22 15:36 ` [PULL 07/15] target/i386: Added V_INTR_PRIO check to virtual interrupts Paolo Bonzini
2021-07-22 15:36 ` [PULL 08/15] target/i386: Added consistency checks for CR4 Paolo Bonzini
2021-08-31 17:03 ` Richard W.M. Jones
2021-08-31 17:12 ` Daniel P. Berrangé [this message]
2021-08-31 17:35 ` Daniel P. Berrangé
2021-07-22 15:36 ` [PULL 09/15] target/i386: Added consistency checks for EFER Paolo Bonzini
2021-07-22 15:36 ` [PULL 10/15] configure: Drop obsolete check for the alloc_size attribute Paolo Bonzini
2021-07-22 15:36 ` [PULL 11/15] meson: fix dependencies for modinfo Paolo Bonzini
2021-07-22 15:36 ` [PULL 12/15] configure: Fix --without-default-features propagation to meson Paolo Bonzini
2021-07-22 15:36 ` [PULL 13/15] configure: Allow vnc to get disabled with --without-default-features Paolo Bonzini
2021-07-22 15:36 ` [PULL 14/15] configure: Fix the default setting of the "xen" feature Paolo Bonzini
2021-07-22 15:36 ` [PULL 15/15] configure: Let --without-default-features disable vhost-kernel and vhost-vdpa Paolo Bonzini
2021-07-23 10:15 ` [PULL 00/15] Misc bugfix patches for 2021-07-22 Peter Maydell
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