From: Heiko Carstens <hca@linux.ibm.com>
To: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org, borntraeger@de.ibm.com,
frankja@linux.ibm.com, nsg@linux.ibm.com, nrb@linux.ibm.com,
seiden@linux.ibm.com, gra@linux.ibm.com,
schlameuss@linux.ibm.com, svens@linux.ibm.com,
agordeev@linux.ibm.com, gor@linux.ibm.com, david@kernel.org,
gerald.schaefer@linux.ibm.com
Subject: Re: [PATCH v7 00/29] KVM: s390: gmap rewrite, the real deal
Date: Wed, 4 Feb 2026 16:23:54 +0100 [thread overview]
Message-ID: <20260204152354.6906B2f-hca@linux.ibm.com> (raw)
In-Reply-To: <20260204150259.60425-1-imbrenda@linux.ibm.com>
On Wed, Feb 04, 2026 at 04:02:29PM +0100, Claudio Imbrenda wrote:
> This series is the last big series of the gmap rewrite. It introduces
> the new code and actually uses it. The old code is then removed.
>
> KVM on s390 will now use the mmu_notifier, like most other
> architectures. The gmap address space is now completely separate from
> userspace; no level of the page tables is shared between guest mapping
> and userspace.
>
> One of the biggest advantages is that the page size of userspace is
> completely independent of the page size used by the guest. Userspace
> can mix normal pages, THPs, hugetlbfs, and more.
>
> It's now possible to have nested guests and guests with huge pages
> running on the same host. In fact, it's possible to have a nested
> guest on a guest with huge pages. Transparent hugepages are also
> possible.
FWIW, for everything that touches code which is not only KVM:
Acked-by: Heiko Carstens <hca@linux.ibm.com>
prev parent reply other threads:[~2026-02-04 15:24 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-04 15:02 [PATCH v7 00/29] KVM: s390: gmap rewrite, the real deal Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 01/29] KVM: s390: Refactor pgste lock and unlock functions Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 02/29] KVM: s390: Add P bit in table entry bitfields, move union vaddress Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 03/29] s390: Make UV folio operations work on whole folio Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 04/29] s390: Move sske_frame() to a header Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 05/29] KVM: s390: Add gmap_helper_set_unused() Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 06/29] KVM: s390: Introduce import_lock Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 07/29] KVM: s390: Export two functions Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 08/29] s390/mm: Warn if uv_convert_from_secure_pte() fails Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 09/29] KVM: s390: vsie: Pass gmap explicitly as parameter Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 10/29] KVM: s390: Enable KVM_GENERIC_MMU_NOTIFIER Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 11/29] KVM: s390: Rename some functions in gaccess.c Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 12/29] KVM: s390: KVM-specific bitfields and helper functions Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 13/29] KVM: s390: KVM page table management functions: allocation Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 14/29] KVM: s390: KVM page table management functions: clear and replace Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 15/29] KVM: s390: KVM page table management functions: walks Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 16/29] KVM: s390: KVM page table management functions: storage keys Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 17/29] KVM: s390: KVM page table management functions: lifecycle management Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 18/29] KVM: s390: KVM page table management functions: CMMA Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 19/29] KVM: s390: New gmap code Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 20/29] KVM: s390: Add helper functions for fault handling Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 21/29] KVM: s390: Add some helper functions needed for vSIE Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 22/29] KVM: s390: Stop using CONFIG_PGSTE Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 23/29] KVM: s390: Storage key functions refactoring Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 24/29] KVM: s390: Switch to new gmap Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 25/29] KVM: s390: Remove gmap from s390/mm Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 26/29] KVM: S390: Remove PGSTE code from linux/s390 mm Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 27/29] KVM: s390: Enable 1M pages for gmap Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 28/29] KVM: s390: Storage key manipulation IOCTL Claudio Imbrenda
2026-02-04 15:02 ` [PATCH v7 29/29] KVM: s390: selftests: Add selftest for the KVM_S390_KEYOP ioctl Claudio Imbrenda
2026-02-04 15:23 ` Heiko Carstens [this message]
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=20260204152354.6906B2f-hca@linux.ibm.com \
--to=hca@linux.ibm.com \
--cc=agordeev@linux.ibm.com \
--cc=borntraeger@de.ibm.com \
--cc=david@kernel.org \
--cc=frankja@linux.ibm.com \
--cc=gerald.schaefer@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=gra@linux.ibm.com \
--cc=imbrenda@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=nrb@linux.ibm.com \
--cc=nsg@linux.ibm.com \
--cc=schlameuss@linux.ibm.com \
--cc=seiden@linux.ibm.com \
--cc=svens@linux.ibm.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