From: Janosch Frank <frankja@linux.ibm.com>
To: Claudio Imbrenda <imbrenda@linux.ibm.com>, kvm@vger.kernel.org
Cc: cohuck@redhat.com, borntraeger@de.ibm.com, thuth@redhat.com,
pasic@linux.ibm.com, david@redhat.com,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 13/13] KVM: s390: pv: add support for UV feature bits
Date: Thu, 29 Jul 2021 11:52:58 +0200 [thread overview]
Message-ID: <4d26ba27-e235-8f2b-c59c-01d3e0691453@linux.ibm.com> (raw)
In-Reply-To: <20210728142631.41860-14-imbrenda@linux.ibm.com>
On 7/28/21 4:26 PM, Claudio Imbrenda wrote:
> Add support for Ultravisor feature bits, and take advantage of the
> functionality advertised to speed up the lazy destroy mechanism.
UV feature bit support is already merged please fix the description and
subject.
>
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> ---
> arch/s390/kernel/uv.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
> index f0af49b09a91..6ec3d7338ec8 100644
> --- a/arch/s390/kernel/uv.c
> +++ b/arch/s390/kernel/uv.c
> @@ -290,7 +290,8 @@ static int make_secure_pte(pte_t *ptep, unsigned long addr,
>
> static bool should_export_before_import(struct uv_cb_header *uvcb, struct mm_struct *mm)
> {
> - return uvcb->cmd != UVC_CMD_UNPIN_PAGE_SHARED &&
> + return !test_bit_inv(BIT_UV_FEAT_MISC, &uv_info.uv_feature_indications) &&
> + uvcb->cmd != UVC_CMD_UNPIN_PAGE_SHARED &&
> atomic_read(&mm->context.is_protected) > 1;
> }
>
>
next prev parent reply other threads:[~2021-07-29 9:53 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 14:26 [PATCH v2 00/13] KVM: s390: pv: implement lazy destroy Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 01/13] KVM: s390: pv: avoid stall notifications for some UVCs Claudio Imbrenda
2021-07-29 9:58 ` Janosch Frank
2021-07-29 12:52 ` Claudio Imbrenda
2021-07-29 10:49 ` Cornelia Huck
2021-07-29 13:22 ` Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 02/13] KVM: s390: pv: leak the ASCE page when destroy fails Claudio Imbrenda
2021-07-29 10:41 ` Janosch Frank
2021-07-29 12:54 ` Claudio Imbrenda
2021-07-29 13:45 ` Janosch Frank
2021-07-28 14:26 ` [PATCH v2 03/13] KVM: s390: pv: properly handle page flags for protected guests Claudio Imbrenda
2021-07-29 11:43 ` Janosch Frank
2021-07-28 14:26 ` [PATCH v2 04/13] KVM: s390: pv: handle secure storage violations " Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 05/13] KVM: s390: pv: handle secure storage exceptions for normal guests Claudio Imbrenda
2021-07-29 12:17 ` Janosch Frank
2021-07-29 13:28 ` Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 06/13] KVM: s390: pv: refactor s390_reset_acc Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 07/13] KVM: s390: pv: usage counter instead of flag Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 08/13] KVM: s390: pv: add export before import Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 09/13] KVM: s390: pv: lazy destroy for reboot Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 10/13] KVM: s390: pv: extend lazy destroy to handle shutdown Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 11/13] KVM: s390: pv: module parameter to fence lazy destroy Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 12/13] KVM: s390: pv: add OOM notifier for " Claudio Imbrenda
2021-07-28 14:26 ` [PATCH v2 13/13] KVM: s390: pv: add support for UV feature bits Claudio Imbrenda
2021-07-29 9:52 ` Janosch Frank [this message]
2021-07-29 13:28 ` Claudio Imbrenda
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