[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen master] x86/p2m: add PoD accounting to set_typed_p2m_entry()
commit 11d49fffb2cad84403d807200be3085d653c854c Author: Jan Beulich <jbeulich@xxxxxxxx> AuthorDate: Wed Sep 23 11:14:05 2015 +0200 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Wed Sep 23 11:14:05 2015 +0200 x86/p2m: add PoD accounting to set_typed_p2m_entry() While neither PoD together with pass-through nor PVH are currently supported we still shouldn't leave in place such latent issues. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Tim Deegan <tim@xxxxxxx> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx> --- xen/arch/x86/mm/p2m.c | 10 +++++++++- 1 files changed, 9 insertions(+), 1 deletions(-) diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c index e1d930a..87b6a16 100644 --- a/xen/arch/x86/mm/p2m.c +++ b/xen/arch/x86/mm/p2m.c @@ -926,11 +926,19 @@ static int set_typed_p2m_entry(struct domain *d, unsigned long gfn, mfn_t mfn, P2M_DEBUG("set %d %lx %lx\n", gfn_p2mt, gfn, mfn_x(mfn)); rc = p2m_set_entry(p2m, gfn, mfn, PAGE_ORDER_4K, gfn_p2mt, access); - gfn_unlock(p2m, gfn, 0); if ( rc ) gdprintk(XENLOG_ERR, "p2m_set_entry failed! mfn=%08lx rc:%d\n", mfn_x(get_gfn_query_unlocked(p2m->domain, gfn, &ot)), rc); + else if ( p2m_is_pod(ot) ) + { + pod_lock(p2m); + p2m->pod.entry_count--; + BUG_ON(p2m->pod.entry_count < 0); + pod_unlock(p2m); + } + gfn_unlock(p2m, gfn, 0); + return rc; } -- generated by git-patchbot for /home/xen/git/xen.git#master _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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