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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selftest.h
// SPDX-License-Identifier: MIT
/*
* Copyright © 2019 Intel Corporation
*/
#ifndef __SELFTEST_H__
#define __SELFTEST_H__
#include <linux/compiler.h>
#define selftest(name, func) int func(void);
#include "selftests.h"
#undef selftest
struct subtest {
int (*func)(void *data);
const char *name;
};
int __subtests(const char *caller,
const struct subtest *st,
int count,
void *data);
#define subtests(T, data) \
__subtests(__func__, T, ARRAY_SIZE(T), data)
#define SUBTEST(x) { x, #x }
#endif /* __SELFTEST_H__ */
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