From: Gerd Hoffmann <kraxel@redhat.com>
To: kvm@vger.kernel.org
Cc: Tom Lendacky <thomas.lendacky@amd.com>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: [PATCH v3 0/2] kvm/cpuid: set proper GuestPhysBits in CPUID.0x80000008
Date: Mon, 11 Mar 2024 11:41:15 +0100 [thread overview]
Message-ID: <20240311104118.284054-1-kraxel@redhat.com> (raw)
Use the GuestPhysBits field (EAX[23:16]) to communicate the max
addressable GPA to the guest. Typically this is identical to the max
effective GPA, except in case the CPU supports MAXPHYADDR > 48 but does
not support 5-level TDP.
See commit messages and source code comments for details.
Gerd Hoffmann (2):
kvm/cpuid: remove GuestPhysBits code.
kvm/cpuid: set proper GuestPhysBits in CPUID.0x80000008
arch/x86/kvm/mmu.h | 2 ++
arch/x86/kvm/cpuid.c | 53 ++++++++++++++++++++++++++++++------------
arch/x86/kvm/mmu/mmu.c | 5 ++++
3 files changed, 45 insertions(+), 15 deletions(-)
--
2.44.0
next reply other threads:[~2024-03-11 10:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 10:41 Gerd Hoffmann [this message]
2024-03-11 10:41 ` [PATCH v3 1/2] kvm/cpuid: remove GuestPhysBits code Gerd Hoffmann
2024-03-12 2:38 ` Xiaoyao Li
2024-03-11 10:41 ` [PATCH v3 2/2] kvm/cpuid: set proper GuestPhysBits in CPUID.0x80000008 Gerd Hoffmann
2024-03-12 2:44 ` Xiaoyao Li
2024-03-13 1:06 ` Tao Su
2024-03-13 1:14 ` Xiaoyao Li
2024-03-13 8:38 ` Gerd Hoffmann
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