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[PATCH] x86: drop a bogus SHARED_M2P() check from Dom0 building code
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 28 Jun 2021 13:52:52 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Mon, 28 Jun 2021 11:52:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
If anything, a check covering a wider range of invalid M2P entries ought
to be used (e.g. VALID_M2P()). But since everything is fully under Xen's
control at this stage, simply remove the BUG_ON().
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/arch/x86/pv/dom0_build.c
+++ b/xen/arch/x86/pv/dom0_build.c
@@ -815,7 +815,6 @@ int __init dom0_construct_pv(struct doma
page_list_for_each ( page, &d->page_list )
{
mfn = mfn_x(page_to_mfn(page));
- BUG_ON(SHARED_M2P(get_gpfn_from_mfn(mfn)));
if ( get_gpfn_from_mfn(mfn) >= count )
{
BUG_ON(compat);
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