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Currently FreeBSD uses IPI based TLB flushing for remote TLB flushing. Hyper-V allows hypercalls to flush local and remote TLB. The use of Hyper-V hypercalls gives significant performance improvement in TLB operations. This patch set during test has shown near to 40 percent TLB performance improvement. Also this patch adds rep hypercall implementation as well. Reviewed by: whu, kib Tested by: whu Authored-by: Souradeep Chakrabarti <schakrabarti@microsoft.com> Co-Authored-by: Erni Sri Satya Vennela <ernis@microsoft.com> MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D45521 (cherry picked from commit 2b887687edc25bb4553f0d8a1183f454a85d413d)
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*-
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* Copyright (c) 2009-2012,2016-2024 Microsoft Corp.
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* Copyright (c) 2012 NetApp Inc.
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* Copyright (c) 2012 Citrix Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _HYPERV_MMU_H_
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#define _HYPERV_MMU_H_
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#include "vmbus_var.h"
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#define HV_VCPUS_PER_SPARSE_BANK (64)
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#define HV_MAX_SPARSE_VCPU_BANKS (64)
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struct hyperv_tlb_flush {
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uint64_t address_space;
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uint64_t flags;
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uint64_t processor_mask;
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uint64_t gva_list[];
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}__packed;
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struct hv_vpset {
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uint64_t format;
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uint64_t valid_bank_mask;
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uint64_t bank_contents[];
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} __packed;
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struct hv_tlb_flush_ex {
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uint64_t address_space;
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uint64_t flags;
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struct hv_vpset hv_vp_set;
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} __packed;
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#endif
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