From: Huacai Chen chenhuacai@loongson.cn

[ Upstream commit 83767a67e7b6a0291cde5681ec7e3708f3f8f877 ]

After commit 411740f5422a ("KVM: MIPS/MMU: Implement KVM_CAP_SYNC_MMU") old_pte is no longer used in kvm_mips_map_page(). So remove it to fix a build warning about variable set but not used:

arch/mips/kvm/mmu.c: In function 'kvm_mips_map_page':

...

arch/mips/kvm/mmu.c:701:29: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable]

701 | pte_t *ptep, entry, old_pte; | ^~~~~~~

Cc: stable@vger.kernel.org Fixes: 411740f5422a960 ("KVM: MIPS/MMU: Implement KVM_CAP_SYNC_MMU") Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202310070530.aARZCSfh-lkp@intel.com/ Signed-off-by: Huacai Chen chenhuacai@loongson.cn Reviewed-by: Philippe Mathieu-Daudé philmd@linaro.org Signed-off-by: Thomas Bogendoerfer tsbogend@alpha.franken.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/kvm/mmu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index ee64db0327933..0ed17805dfe4c 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -701,7 +701,7 @@ static int kvm_mips_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, gfn_t gfn = gpa >> PAGE_SHIFT; int srcu_idx, err; kvm_pfn_t pfn; - pte_t *ptep, entry, old_pte; + pte_t *ptep, entry; bool writeable; unsigned long prot_bits; unsigned long mmu_seq; @@ -774,7 +774,6 @@ static int kvm_mips_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, entry = pfn_pte(pfn, __pgprot(prot_bits));

/* Write the PTE */ - old_pte = *ptep; set_pte(ptep, entry);

err = 0;