From 9a7ca8a7c920360db9dcaf616ca6f1440c025043 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 25 Jul 2019 13:36:38 +0200 Subject: virtio-balloon: don't track subpages for the PBP As ramblocks cannot get removed/readded while we are processing a bulk of inflation requests, there is no more need to track the page size in form of the number of subpages. Suggested-by: David Gibson Signed-off-by: David Hildenbrand Message-Id: <20190725113638.4702-8-david@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/virtio/virtio-balloon.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index a6282d5..fe9664e 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -36,7 +36,6 @@ typedef struct PartiallyBalloonedPage { ram_addr_t base_gpa; - long subpages; unsigned long *bitmap; } PartiallyBalloonedPage; @@ -55,16 +54,15 @@ static PartiallyBalloonedPage *virtio_balloon_pbp_alloc(ram_addr_t base_gpa, PartiallyBalloonedPage *pbp = g_new0(PartiallyBalloonedPage, 1); pbp->base_gpa = base_gpa; - pbp->subpages = subpages; pbp->bitmap = bitmap_new(subpages); return pbp; } static bool virtio_balloon_pbp_matches(PartiallyBalloonedPage *pbp, - ram_addr_t base_gpa, long subpages) + ram_addr_t base_gpa) { - return pbp->subpages == subpages && pbp->base_gpa == base_gpa; + return pbp->base_gpa == base_gpa; } static void balloon_inflate_page(VirtIOBalloon *balloon, @@ -106,7 +104,7 @@ static void balloon_inflate_page(VirtIOBalloon *balloon, base_gpa = memory_region_get_ram_addr(mr) + mr_offset - (rb_offset - rb_aligned_offset); - if (*pbp && !virtio_balloon_pbp_matches(*pbp, base_gpa, subpages)) { + if (*pbp && !virtio_balloon_pbp_matches(*pbp, base_gpa)) { /* We've partially ballooned part of a host page, but now * we're trying to balloon part of a different one. Too hard, * give up on the old partial page */ -- cgit v1.1