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e497957fee
Invalidate LMTT immediately after removing VF's LMTT page tables and clearing root PTE in the LMTT PD to avoid any invalid access by the hardware (and VF) due to stale data. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: Piotr Piórkowski <piotr.piorkowski@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://lore.kernel.org/r/20250711193316.1920-6-michal.wajdeczko@intel.com
29 lines
811 B
C
29 lines
811 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#ifndef _XE_LMTT_H_
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#define _XE_LMTT_H_
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#include <linux/types.h>
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struct xe_bo;
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struct xe_lmtt;
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struct xe_lmtt_ops;
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#ifdef CONFIG_PCI_IOV
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int xe_lmtt_init(struct xe_lmtt *lmtt);
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void xe_lmtt_init_hw(struct xe_lmtt *lmtt);
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void xe_lmtt_invalidate_hw(struct xe_lmtt *lmtt);
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int xe_lmtt_prepare_pages(struct xe_lmtt *lmtt, unsigned int vfid, u64 range);
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int xe_lmtt_populate_pages(struct xe_lmtt *lmtt, unsigned int vfid, struct xe_bo *bo, u64 offset);
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void xe_lmtt_drop_pages(struct xe_lmtt *lmtt, unsigned int vfid);
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u64 xe_lmtt_estimate_pt_size(struct xe_lmtt *lmtt, u64 size);
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#else
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static inline int xe_lmtt_init(struct xe_lmtt *lmtt) { return 0; }
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static inline void xe_lmtt_init_hw(struct xe_lmtt *lmtt) { }
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#endif
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#endif
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