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| author | Arnd Bergmann <arnd@arndb.de> | 2017-08-10 14:14:39 +0200 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-08-15 18:56:14 +0200 |
| commit | 076b925d51e83c1939bf796c4c5a33f482f986b3 (patch) | |
| tree | 7b84ed68621b54e6c0a93c4a58c586bb66a6cf25 /virt | |
| parent | kvm: x86: Disallow illegal IA32_APIC_BASE MSR values (diff) | |
| download | linux-076b925d51e83c1939bf796c4c5a33f482f986b3.tar.xz linux-076b925d51e83c1939bf796c4c5a33f482f986b3.zip | |
kvm: avoid uninitialized-variable warnings
When PAGE_OFFSET is not a compile-time constant, we run into
warnings from the use of kvm_is_error_hva() that the compiler
cannot optimize out:
arch/arm/kvm/../../../virt/kvm/kvm_main.c: In function '__kvm_gfn_to_hva_cache_init':
arch/arm/kvm/../../../virt/kvm/kvm_main.c:1978:14: error: 'nr_pages_avail' may be used uninitialized in this function [-Werror=maybe-uninitialized]
arch/arm/kvm/../../../virt/kvm/kvm_main.c: In function 'gfn_to_page_many_atomic':
arch/arm/kvm/../../../virt/kvm/kvm_main.c:1660:5: error: 'entry' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This adds fake initializations to the two instances I ran into.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index e17c40d986f3..1b3fa3fc1a78 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1651,7 +1651,7 @@ int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, struct page **pages, int nr_pages) { unsigned long addr; - gfn_t entry; + gfn_t entry = 0; addr = gfn_to_hva_many(slot, gfn, &entry); if (kvm_is_error_hva(addr)) @@ -1970,6 +1970,7 @@ static int __kvm_gfn_to_hva_cache_init(struct kvm_memslots *slots, * verify that the entire region is valid here. */ while (start_gfn <= end_gfn) { + nr_pages_avail = 0; ghc->memslot = __gfn_to_memslot(slots, start_gfn); ghc->hva = gfn_to_hva_many(ghc->memslot, start_gfn, &nr_pages_avail); |