From: Marc Orr <marcorr@google.com>
To: Peter Gonda <pgonda@google.com>
Cc: kvm list <kvm@vger.kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
David Rientjes <rientjes@google.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] KVM, SEV: Refactor out function for unregistering encrypted regions
Date: Tue, 13 Jul 2021 16:18:02 -0700 [thread overview]
Message-ID: <CAA03e5EusWamD=awDq2N8zO7R22Ce-7b2nZaaJiE92R7oxHpXQ@mail.gmail.com> (raw)
In-Reply-To: <20210621163118.1040170-2-pgonda@google.com>
On Mon, Jun 21, 2021 at 9:59 AM Peter Gonda <pgonda@google.com> wrote:
>
> Factor out helper function for freeing the encrypted region list.
>
> Signed-off-by: Peter Gonda <pgonda@google.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Sean Christopherson <seanjc@google.com>
> Cc: David Rientjes <rientjes@google.com>
> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Cc: Brijesh Singh <brijesh.singh@amd.com>
> Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
> Cc: Wanpeng Li <wanpengli@tencent.com>
> Cc: Jim Mattson <jmattson@google.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: kvm@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
>
> ---
> arch/x86/kvm/svm/sev.c | 26 +++++++++++++++++---------
> 1 file changed, 17 insertions(+), 9 deletions(-)
>
> diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
> index 46e339c84998..5af46ff6ec48 100644
> --- a/arch/x86/kvm/svm/sev.c
> +++ b/arch/x86/kvm/svm/sev.c
> @@ -1767,11 +1767,25 @@ int svm_vm_copy_asid_from(struct kvm *kvm, unsigned int source_fd)
> return ret;
> }
>
> +static void __unregister_region_list_locked(struct kvm *kvm,
> + struct list_head *mem_regions)
> +{
> + struct enc_region *pos, *q;
> +
> + lockdep_assert_held(&kvm->lock);
> +
> + if (list_empty(mem_regions))
> + return;
> +
> + list_for_each_entry_safe(pos, q, mem_regions, list) {
> + __unregister_enc_region_locked(kvm, pos);
> + cond_resched();
> + }
> +}
> +
> void sev_vm_destroy(struct kvm *kvm)
> {
> struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
> - struct list_head *head = &sev->regions_list;
> - struct list_head *pos, *q;
>
> if (!sev_guest(kvm))
> return;
> @@ -1795,13 +1809,7 @@ void sev_vm_destroy(struct kvm *kvm)
> * if userspace was terminated before unregistering the memory regions
> * then lets unpin all the registered memory.
> */
> - if (!list_empty(head)) {
> - list_for_each_safe(pos, q, head) {
> - __unregister_enc_region_locked(kvm,
> - list_entry(pos, struct enc_region, list));
> - cond_resched();
> - }
> - }
> + __unregister_region_list_locked(kvm, &sev->regions_list);
>
> mutex_unlock(&kvm->lock);
>
> --
> 2.32.0.288.g62a8d224e6-goog
Reviewed-by: Marc Orr <marcorr@google.com>
next prev parent reply other threads:[~2021-07-13 23:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 16:31 [PATCH 0/3] Add AMD SEV and SEV-ES local migration support Peter Gonda
2021-06-21 16:31 ` [PATCH 1/3] KVM, SEV: Refactor out function for unregistering encrypted regions Peter Gonda
2021-07-12 20:05 ` Brijesh Singh
2021-07-13 21:40 ` Sean Christopherson
2021-07-13 23:18 ` Marc Orr [this message]
2021-06-21 16:31 ` [PATCH 2/3] KVM, SEV: Add support for SEV local migration Peter Gonda
2021-07-12 21:09 ` Brijesh Singh
2021-07-13 20:12 ` Peter Gonda
2021-07-13 22:12 ` Sean Christopherson
2021-07-13 23:24 ` Marc Orr
2021-06-21 16:31 ` [PATCH 3/3] KVM, SEV: Add support for SEV-ES " Peter Gonda
2021-07-13 18:41 ` Brijesh Singh
2021-07-13 22:21 ` Sean Christopherson
2021-07-13 23:25 ` Marc Orr
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAA03e5EusWamD=awDq2N8zO7R22Ce-7b2nZaaJiE92R7oxHpXQ@mail.gmail.com' \
--to=marcorr@google.com \
--cc=bp@alien8.de \
--cc=brijesh.singh@amd.com \
--cc=dgilbert@redhat.com \
--cc=hpa@zytor.com \
--cc=jmattson@google.com \
--cc=joro@8bytes.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=pbonzini@redhat.com \
--cc=pgonda@google.com \
--cc=rientjes@google.com \
--cc=seanjc@google.com \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=wanpengli@tencent.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).