linux-kernel - [PATCH] kvm: memunmap() also needs HAS

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Date:   Mon, 27 May 2019 08:38:28 +0200 (CEST)
From:   Michal Kubecek <mkubecek@...e.cz>
To:     kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        "Radim Krcmar" <rkrcmar@...hat.com>,
        KarimAllah Ahmed <karahmed@...zon.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kvm: memunmap() also needs HAS_IOMEM

Commit d30b214d1d0a ("kvm: fix compilation on s390") addresses link error
(undefined reference to memremap) without HAS_IOMEM but memunmap() is also
only available with HAS_IOMEM enabled so that we need similar fix in
kvm_vcpu_unmap().

Fixes: e45adf665a53 ("KVM: Introduce a new guest mapping API")
Signed-off-by: Michal Kubecek <mkubecek@...e.cz>
---
 virt/kvm/kvm_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 134ec0283a8a..301089a462c4 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1795,8 +1795,10 @@ void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map,
 
 	if (map->page)
 		kunmap(map->page);
+#ifdef CONFIG_HAS_IOMEM
 	else
 		memunmap(map->hva);
+#endif
 
 	if (dirty) {
 		kvm_vcpu_mark_page_dirty(vcpu, map->gfn);
-- 
2.21.0