Maxim Levitsky ad8f9e6994 KVM: x86: emulator: update the emulation mode after CR0 write
Update the emulation mode when handling writes to CR0, because
toggling CR0.PE switches between Real and Protected Mode, and toggling
CR0.PG when EFER.LME=1 switches between Long and Protected Mode.

This is likely a benign bug because there is no writeback of state,
other than the RIP increment, and when toggling CR0.PE, the CPU has
to execute code from a very low memory address.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221025124741.228045-14-mlevitsk@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-10-28 06:10:30 -04:00
2022-09-28 09:02:20 +02:00
2022-10-12 14:46:48 -07:00
2022-10-16 11:12:22 -07:00
2022-10-14 13:22:14 -07:00
2022-09-28 09:02:20 +02:00
2022-09-28 09:02:20 +02:00
2022-08-03 19:52:08 -07:00
2022-10-10 12:00:45 -07:00
2022-10-16 15:36:24 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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