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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2015-06-19 12:17:26 +0200 |
|---|---|---|
| committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2015-10-24 18:02:48 +0200 |
| commit | 95c8425cc3a316c998a7e306799ec6d29811bc32 (patch) | |
| tree | 7391ad2d5459b3001e1eb7c1b830901c1f48dd5c | |
| parent | 95e7c8a0f690f9a0c8b70fd1a4de60bd944371b8 (diff) | |
| download | qemu-95c8425cc3a316c998a7e306799ec6d29811bc32.zip qemu-95c8425cc3a316c998a7e306799ec6d29811bc32.tar.gz qemu-95c8425cc3a316c998a7e306799ec6d29811bc32.tar.bz2 | |
ivshmem: remove max_peer field
max_peer isn't really useful, it tracks the maximum received VM id, but
that quickly matches nb_peers, the size of the peers array. Since VM
come and go, there might be sparse peers so it doesn't help much in
general to have this value around.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
| -rw-r--r-- | hw/misc/ivshmem.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index 0716deb..c4c130d 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -90,7 +90,6 @@ typedef struct IVShmemState { Peer *peers; int nb_peers; /* how many guests we have space for */ - int max_peer; /* maximum numbered peer */ int vm_id; uint32_t vectors; @@ -200,7 +199,7 @@ static void ivshmem_io_write(void *opaque, hwaddr addr, case DOORBELL: /* check that dest VM ID is reasonable */ - if (dest > s->max_peer) { + if (dest >= s->nb_peers) { IVSHMEM_DPRINTF("Invalid destination VM ID (%d)\n", dest); break; } @@ -574,11 +573,6 @@ static void ivshmem_read(void *opaque, const uint8_t *buf, int size) /* increment count for particular guest */ s->peers[incoming_posn].nb_eventfds++; - /* keep track of the maximum VM ID */ - if (incoming_posn > s->max_peer) { - s->max_peer = incoming_posn; - } - if (incoming_posn == s->vm_id) { s->eventfd_chr[guest_max_eventfd] = create_eventfd_chr_device(s, &s->peers[s->vm_id].eventfds[guest_max_eventfd], @@ -721,8 +715,6 @@ static void pci_ivshmem_realize(PCIDevice *dev, Error **errp) PCI_BASE_ADDRESS_MEM_PREFETCH; Error *local_err = NULL; - s->max_peer = -1; - if (s->sizearg == NULL) { s->ivshmem_size = 4 << 20; /* 4 MB default */ } else { |