diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-09-06 20:14:15 +0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-02 18:47:55 +0200 |
| commit | 3829640049cf516d229620e5919b0ab66fd6ac86 (patch) | |
| tree | ef5eb722c0fe8fd4ece5bf28bf0065374f98cdde /include | |
| parent | 7184de64a1cf23a72191484b9a6995c3bfc9fb0b (diff) | |
hostmem-memfd: add checks before adding hostmem-memfd & properties
Run some memfd-related checks before registering hostmem-memfd &
various properties. This will help libvirt to figure out what the host
is supposed to be capable of.
qemu_memfd_check() is changed to a less optimized version, since it is
used with various flags, it no longer caches the result.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180906161415.8543-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qemu/memfd.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/include/qemu/memfd.h b/include/qemu/memfd.h index 49e79634da..d551c28b68 100644 --- a/include/qemu/memfd.h +++ b/include/qemu/memfd.h @@ -16,12 +16,28 @@ #define F_SEAL_WRITE 0x0008 /* prevent writes */ #endif +#ifndef MFD_CLOEXEC +#define MFD_CLOEXEC 0x0001U +#endif + +#ifndef MFD_ALLOW_SEALING +#define MFD_ALLOW_SEALING 0x0002U +#endif + +#ifndef MFD_HUGETLB +#define MFD_HUGETLB 0x0004U +#endif + +#ifndef MFD_HUGE_SHIFT +#define MFD_HUGE_SHIFT 26 +#endif + int qemu_memfd_create(const char *name, size_t size, bool hugetlb, uint64_t hugetlbsize, unsigned int seals, Error **errp); bool qemu_memfd_alloc_check(void); void *qemu_memfd_alloc(const char *name, size_t size, unsigned int seals, int *fd, Error **errp); void qemu_memfd_free(void *ptr, size_t size, int fd); -bool qemu_memfd_check(void); +bool qemu_memfd_check(unsigned int flags); #endif /* QEMU_MEMFD_H */ |