From: "Doru Blânzeanu" <dblanzeanu@linux.microsoft.com>
To: Magnus Kulke <magnuskulke@linux.microsoft.com>
Cc: qemu-devel@nongnu.org, "Wei Liu" <wei.liu@kernel.org>,
"Zhao Liu" <zhao1.liu@intel.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Wei Liu" <liuwe@microsoft.com>,
"Magnus Kulke" <magnuskulke@microsoft.com>,
"Doru Blânzeanu" <dblanzeanu@microsoft.com>
Subject: Re: [PATCH v6 9/9] accel/mshv: disable la57 (5lvl paging)
Date: Wed, 6 May 2026 14:24:10 +0300 [thread overview]
Message-ID: <afsk2r9E_DGbbHvw@linux.microsoft.com> (raw)
In-Reply-To: <20260416121116.527927-10-magnuskulke@linux.microsoft.com>
On Thu, Apr 16, 2026 at 02:11:16PM +0200, Magnus Kulke wrote:
> This change disable la57 paging on the mshv hypervisor on both the
> mshv processor feature bitmap and mask the cpuid feature leaf to the
> guest.
>
> Since the removal of hypervisor-assisted gva=>gpa translation in
> 1c85a4a3d7 we have seen MMIO errors in guests on la57-enabled hw. We
> will have to investigate and test this further.
>
> Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com>
> Reviewed-by: Wei Liu <wei.liu@kernel.org>
> ---
> accel/mshv/mshv-all.c | 7 +++++++
> include/system/mshv_int.h | 2 ++
> target/i386/mshv/mshv-cpu.c | 15 +++++++++++++++
> 3 files changed, 24 insertions(+)
>
Reviewed-by: Doru Blânzeanu <dblanzeanu@linux.microsoft.com>
prev parent reply other threads:[~2026-05-06 11:25 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-16 12:11 [PATCH v6 0/9] Support QEMU cpu models in MSHV accelerator Magnus Kulke
2026-04-16 12:11 ` [PATCH v6 1/9] accel/mshv: use mshv_create_partition_v2 payload Magnus Kulke
2026-04-30 8:43 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 2/9] target/i386/mshv: fix cpuid propagation bug Magnus Kulke
2026-04-30 9:05 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 3/9] target/i386/mshv: fix various cpuid traversal bugs Magnus Kulke
2026-04-30 9:35 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 4/9] target/i386/mshv: change cpuid mask to UINT32_MAX Magnus Kulke
2026-04-30 11:27 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 5/9] target/i386/mshv: set cpu model name on -cpu host Magnus Kulke
2026-04-30 11:47 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 6/9] target/i386: query mshv accel for supported cpuids Magnus Kulke
2026-05-06 10:41 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 7/9] target/i386/mshv: populate xsave area offsets Magnus Kulke
2026-05-06 11:02 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 8/9] target/i386/mshv: use hv-provided [0xD,1+2].EBX Magnus Kulke
2026-05-06 11:14 ` Doru Blânzeanu
2026-04-16 12:11 ` [PATCH v6 9/9] accel/mshv: disable la57 (5lvl paging) Magnus Kulke
2026-05-06 11:24 ` Doru Blânzeanu [this message]
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