Mailing List Archive

xen/arch/x86/mm.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)


Check that the valid mfn is the one we are mapping, not the
mfn of the page table of the foreign domain.

Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>

diff -r 4e0c533a3e1d -r 2372d2bf76b5 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -3572,7 +3572,8 @@ int do_mmu_update(
rc = -ENOENT;
break;
}
- else if ( p2m_ram_paging_in_start == l1e_p2mt && !mfn_valid(mfn) )
+ else if ( p2m_ram_paging_in_start == l1e_p2mt &&
+ !mfn_valid(l1emfn) )
{
put_gfn(pg_owner, l1egfn);
rc = -ENOENT;
@@ -3620,7 +3621,8 @@ int do_mmu_update(
rc = -ENOENT;
break;
}
- else if ( p2m_ram_paging_in_start == l2e_p2mt && !mfn_valid(mfn) )
+ else if ( p2m_ram_paging_in_start == l2e_p2mt &&
+ !mfn_valid(l2emfn) )
{
put_gfn(pg_owner, l2egfn);
rc = -ENOENT;
@@ -3654,7 +3656,8 @@ int do_mmu_update(
rc = -ENOENT;
break;
}
- else if ( p2m_ram_paging_in_start == l3e_p2mt && !mfn_valid(mfn) )
+ else if ( p2m_ram_paging_in_start == l3e_p2mt &&
+ !mfn_valid(l3emfn) )
{
put_gfn(pg_owner, l3egfn);
rc = -ENOENT;
@@ -3688,7 +3691,8 @@ int do_mmu_update(
rc = -ENOENT;
break;
}
- else if ( p2m_ram_paging_in_start == l4e_p2mt && !mfn_valid(mfn) )
+ else if ( p2m_ram_paging_in_start == l4e_p2mt &&
+ !mfn_valid(l4emfn) )
{
put_gfn(pg_owner, l4egfn);
rc = -ENOENT;

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