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Date:   Thu, 4 Aug 2022 00:10:44 -0700
From:   Isaku Yamahata <isaku.yamahata@gmail.com>
To:     Chao Peng <chao.p.peng@linux.intel.com>
Cc:     kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
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        isaku.yamahata@gmail.com
Subject: Re: [PATCH v7 07/14] KVM: Use gfn instead of hva for
 mmu_notifier_retry
Message-ID: <20220804071044.GA4091749@ls.amr.corp.intel.com>
References: <20220706082016.2603916-1-chao.p.peng@linux.intel.com>
 <20220706082016.2603916-8-chao.p.peng@linux.intel.com>
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On Wed, Jul 06, 2022 at 04:20:09PM +0800,
Chao Peng <chao.p.peng@linux.intel.com> wrote:

> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 0bdb6044e316..e9153b54e2a4 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -1362,10 +1362,8 @@ void kvm_mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc);
>  void *kvm_mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc);
>  #endif
>  
> -void kvm_inc_notifier_count(struct kvm *kvm, unsigned long start,
> -				   unsigned long end);
> -void kvm_dec_notifier_count(struct kvm *kvm, unsigned long start,
> -				   unsigned long end);
> +void kvm_inc_notifier_count(struct kvm *kvm, gfn_t start, gfn_t end);
> +void kvm_dec_notifier_count(struct kvm *kvm, gfn_t start, gfn_t end);
>  
>  long kvm_arch_dev_ioctl(struct file *filp,
>  			unsigned int ioctl, unsigned long arg);

The corresponding changes in kvm_main.c are missing.

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index b2c79bef61bd..0184e327f6f5 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -711,8 +711,7 @@ static void kvm_mmu_notifier_change_pte(struct mmu_notifier *mn,
        kvm_handle_hva_range(mn, address, address + 1, pte, kvm_set_spte_gfn);
 }
 
-void kvm_inc_notifier_count(struct kvm *kvm, unsigned long start,
-                                  unsigned long end)
+void kvm_inc_notifier_count(struct kvm *kvm, gfn_t start, gfn_t end)
 {
        /*
         * The count increase must become visible at unlock time as no
@@ -786,8 +785,7 @@ static int kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn,
        return 0;
 }
 
-void kvm_dec_notifier_count(struct kvm *kvm, unsigned long start,
-                                  unsigned long end)
+void kvm_dec_notifier_count(struct kvm *kvm, gfn_t start, gfn_t end)
 {
        /*
         * This sequence increase will notify the kvm page fault that


-- 
Isaku Yamahata <isaku.yamahata@gmail.com>