On Thu, Jul 06, 2023 at 02:29:24PM +0900, David Stevens wrote:
> On Wed, Jul 5, 2023 at 7:53 PM Yu Zhang wrote:
> >
> > On Wed, Jul 05, 2023 at 06:22:59PM +0900, David Stevens wrote:
> > > On Wed, Jul 5, 2023 at 12:10 PM Yu Zhang
> > > wrote:
> > >
On Thu, Jul 06, 2023 at 01:52:08PM +0900, David Stevens wrote:
> On Wed, Jul 5, 2023 at 7:17 PM Yu Zhang wrote:
> >
> > On Tue, Jul 04, 2023 at 04:50:50PM +0900, David Stevens wrote:
> > > From: David Stevens
> > >
> > > Stop passing FOLL_GET to __k
> > @@ -883,7 +884,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu,
> > struct kvm_mmu *mmu,
> > */
> > static int FNAME(sync_spte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page
> > *sp, int i)
> > {
> > - bool host_writable;
> > + bool host_writable, is_refcounted;
> > gpa_t f
On Tue, Jul 04, 2023 at 04:50:48PM +0900, David Stevens wrote:
> From: David Stevens
>
> Make it so that __kvm_follow_pfn does not imply FOLL_GET. This allows
> callers to resolve a gfn when the associated pfn has a valid struct page
> that isn't being actively refcounted (e.g. tail pages of non-
On Wed, Jul 05, 2023 at 06:22:59PM +0900, David Stevens wrote:
> On Wed, Jul 5, 2023 at 12:10 PM Yu Zhang wrote:
> >
> > > @@ -2514,35 +2512,26 @@ static bool hva_to_pfn_fast(unsigned long addr,
> > > bool write_fault,
> > > * The slow path to get the pfn o
On Tue, Jul 04, 2023 at 04:50:50PM +0900, David Stevens wrote:
> From: David Stevens
>
> Stop passing FOLL_GET to __kvm_follow_pfn. This allows the host to map
> memory into the guest that is backed by un-refcounted struct pages - for
> example, higher order non-compound pages allocated by the am
On Tue, Jul 04, 2023 at 04:50:50PM +0900, David Stevens wrote:
> From: David Stevens
>
> Stop passing FOLL_GET to __kvm_follow_pfn. This allows the host to map
> memory into the guest that is backed by un-refcounted struct pages - for
> example, higher order non-compound pages allocated by the am
On Tue, Jul 04, 2023 at 04:50:49PM +0900, David Stevens wrote:
> From: David Stevens
>
> Migrate from __gfn_to_pfn_memslot to __kvm_follow_pfn.
>
> Signed-off-by: David Stevens
> ---
> arch/x86/kvm/mmu/mmu.c | 35 +--
> 1 file changed, 25 insertions(+), 10 delet
>
> +void kvm_set_page_accessed(struct page *page);
> +void kvm_set_page_dirty(struct page *page);
> +
No one calls these 2 routines in this patch. How about move this change to
[PATCH v7 5/8] KVM: x86/mmu: Don't pass FOLL_GET to __kvm_follow_pfn ?
...
> @@ -2930,17 +2933,19 @@ static bool kvm_
> @@ -2514,35 +2512,26 @@ static bool hva_to_pfn_fast(unsigned long addr, bool
> write_fault,
> * The slow path to get the pfn of the specified host virtual address,
> * 1 indicates success, -errno is returned if error is detected.
> */
> -static int hva_to_pfn_slow(unsigned long addr, bool
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