Revision 32ffa4f71e10009498ae6b54da65ab316db967bd authored by Axel Rasmussen on 19 May 2021, 20:03:33 UTC, committed by Paolo Bonzini on 27 May 2021, 11:45:55 UTC
This is a preparatory commit needed before we can use different kinds of backing pages for guest memory. Previously, we used perf_test_args.host_page_size, which is the host's native page size (commonly 4K). For VM_MEM_SRC_ANONYMOUS this turns out to be okay, but in a follow-up commit we want to allow using different kinds of backing memory. Take VM_MEM_SRC_ANONYMOUS_HUGETLB for example. Without this change, if we used that backing page type, when we issued a UFFDIO_COPY ioctl we'd only do so with 4K, rather than the full 2M of a backing hugepage. In this case, UFFDIO_COPY returns -EINVAL (__mcopy_atomic_hugetlb checks the size). Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Message-Id: <20210519200339.829146-5-axelrasmussen@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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ethernet-util.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* This file is based on code from OCTEON SDK by Cavium Networks.
*
* Copyright (c) 2003-2007 Cavium Networks
*/
/**
* cvm_oct_get_buffer_ptr - convert packet data address to pointer
* @packet_ptr: Packet data hardware address
*
* Returns Packet buffer pointer
*/
static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
{
return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
<< 7);
}
/**
* INTERFACE - convert IPD port to logical interface
* @ipd_port: Port to check
*
* Returns Logical interface
*/
static inline int INTERFACE(int ipd_port)
{
int interface;
if (ipd_port == CVMX_PIP_NUM_INPUT_PORTS)
return 10;
interface = cvmx_helper_get_interface_num(ipd_port);
if (interface >= 0)
return interface;
panic("Illegal ipd_port %d passed to %s\n", ipd_port, __func__);
}
/**
* INDEX - convert IPD/PKO port number to the port's interface index
* @ipd_port: Port to check
*
* Returns Index into interface port list
*/
static inline int INDEX(int ipd_port)
{
return cvmx_helper_get_interface_index_num(ipd_port);
}
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