| Message ID | 20231010085434.2678144-1-chenhuacai@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | MIPS: KVM: Fix a build warning about variable set but not used | expand |
On 10/10/23 10:54, Huacai Chen wrote: > After commit 411740f5422a ("KVM: MIPS/MMU: Implement KVM_CAP_SYNC_MMU") Date: Tue Dec 13 16:32:39 2016 +0000 7 years ago... Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> > 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> > --- > arch/mips/kvm/mmu.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-)
On Tue, Oct 10, 2023 at 04:54:34PM +0800, Huacai Chen wrote: > 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> > --- > 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 e8c08988ed37..cc09fd23aae3 100644 > --- a/arch/mips/kvm/mmu.c > +++ b/arch/mips/kvm/mmu.c > @@ -592,7 +592,7 @@ 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; > @@ -664,7 +664,6 @@ 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; > -- > 2.39.3 applied to mips-next. Thomas.
diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index e8c08988ed37..cc09fd23aae3 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -592,7 +592,7 @@ 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; @@ -664,7 +664,6 @@ 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;
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> --- arch/mips/kvm/mmu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)