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Thu, 5 Nov 2026 17:01:01 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id HMEkC0K27GqWRwAAD6G6ig:T8 (envelope-from ); Thu, 05 Nov 2026 17:01:01 +0000 From: =?UTF-8?q?Carlos=20L=C3=B3pez?= To: kvm@vger.kernel.org, linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linux-riscv@lists.infradead.org, seanjc@google.com, pbonzini@redhat.com, akpm@linux-foundation.org, david@kernel.org, peterx@redhat.com, ljs@kernel.org, imbrenda@linux.ibm.com, borntraeger@linux.ibm.com, frankja@linux.ibm.com, =?UTF-8?q?Carlos=20L=C3=B3pez?= Subject: [PATCH v2 7/9] KVM: pass the mmu_notifier event and flags to kvm_gfn_range Date: Thu, 5 Nov 2026 17:50:04 +0100 Message-ID: <20261105165004.2663799-11-clopez@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20261105165004.2663799-4-clopez@suse.de> References: <20261105165004.2663799-4-clopez@suse.de> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Flag: NO X-Spam-Level: X-Spamd-Result: default: False [-12.30 / 50.00]; SUSE_INTERNAL_BYPASS(-9.00)[]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; RCPT_COUNT_TWELVE(0.00)[15]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:email] X-Spam-Score: -12.30 Propagate the event and flags of the mmu_notifier invalidation into struct kvm_gfn_range, so that architecture handlers can tell what kind of change they are handling, such as a permission upgrade (MMU_NOTIFIER_RANGE_PERM_UPGRADE). They are not consumed yet, so no functional change. Signed-off-by: Carlos López --- include/linux/kvm_host.h | 3 +++ virt/kvm/kvm_main.c | 8 ++++++++ 2 files changed, 11 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e7fc94e2910a..1f5ce4410ddb 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -274,6 +274,9 @@ struct kvm_gfn_range { enum kvm_gfn_range_filter attr_filter; bool may_block; bool lockless; + /* From the mmu_notifier invalidation, if any. */ + enum mmu_notifier_event event; + unsigned int flags; }; bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range); bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index cf4cb586f140..c517d1deb488 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -532,6 +532,8 @@ struct kvm_mmu_notifier_range { bool flush_on_ret; bool may_block; bool lockless; + enum mmu_notifier_event event; + unsigned int flags; }; /* @@ -613,6 +615,8 @@ static __always_inline kvm_mn_ret_t kvm_handle_hva_range(struct kvm *kvm, */ gfn_range.arg = range->arg; gfn_range.may_block = range->may_block; + gfn_range.event = range->event; + gfn_range.flags = range->flags; /* * HVA-based notifications aren't relevant to private * mappings as they don't have a userspace mapping. @@ -738,6 +742,8 @@ static int kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn, .on_lock = kvm_mmu_invalidate_start, .flush_on_ret = true, .may_block = mmu_notifier_range_blockable(range), + .event = range->event, + .flags = range->flags, }; trace_kvm_unmap_hva_range(range->start, range->end); @@ -2552,6 +2558,8 @@ static __always_inline void kvm_handle_gfn_range(struct kvm *kvm, gfn_range.arg = range->arg; gfn_range.may_block = range->may_block; + gfn_range.event = range->event; + gfn_range.flags = range->flags; /* * If/when KVM supports more attributes beyond private .vs shared, this -- 2.51.0