From 93de2a6a4b91b72607136dd656edf03fb399d27f Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 23 Sep 2026 09:37:21 -0700 Subject: KVM: SEV: Do cache maintenance on the source VM during intra-host migration Manually perform cache maintenance on the source VM during intra-host migration to ensure no stale data is left in CPU caches after the VM is destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's memory reclaim flows won't trigger cache maintenance, e.g. when all guest memory is reclaimed in response to detaching from the mmu_notifier. Note, relying on the destination VM to do cache maintenance isn't an option as KVM doesn't require identical guest memory configurations, i.e. the source VM may have access to memory that the destination VM does not. Enforcing equivalent memory configurations is infeasible, as it would require a *deep* comparison of memslots, e.g. to verify that not only are the memslot identical, but what the memslots point at is also identical. Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration") Cc: stable@vger.kernel.org Reported-by: Stefan Teodorescu Signed-off-by: Sean Christopherson Message-ID: <20260923163721.1584779-3-seanjc@google.com> Signed-off-by: Paolo Bonzini --- include/sound/sof/dai-amd.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 include/sound/sof/dai-amd.h (limited to 'include/sound/sof/dai-amd.h') diff --git a/include/sound/sof/dai-amd.h b/include/sound/sof/dai-amd.h new file mode 100644 index 000000000..e2107da65 --- /dev/null +++ b/include/sound/sof/dai-amd.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * Copyright(c) 2021 Advanced Micro Devices, Inc.. All rights reserved. + */ + +#ifndef __INCLUDE_SOUND_SOF_DAI_AMD_H__ +#define __INCLUDE_SOUND_SOF_DAI_AMD_H__ + +#include + +/* ACP Configuration Request - SOF_IPC_DAI_AMD_CONFIG */ +struct sof_ipc_dai_acp_params { + struct sof_ipc_hdr hdr; + + uint32_t fsync_rate; /* FSYNC frequency in Hz */ + uint32_t tdm_slots; + uint32_t tdm_mode; + uint32_t format; +} __packed; + +/* ACPDMIC Configuration Request - SOF_IPC_DAI_AMD_CONFIG */ +struct sof_ipc_dai_acpdmic_params { + uint32_t pdm_rate; + uint32_t pdm_ch; +} __packed; + +/* ACP_SDW Configuration Request - SOF_IPC_DAI_AMD_SDW_CONFIG */ +struct sof_ipc_dai_acp_sdw_params { + struct sof_ipc_hdr hdr; + u32 rate; + u32 channels; +} __packed; + +#endif -- cgit v1.3.1