linux-kernel - [RFC PATCH 07/18] KVM: Provide attributes to kvm_arch_pre_set_memory

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Message-ID: <20240710234222.2333120-8-jthoughton@google.com>
Date: Wed, 10 Jul 2024 23:42:11 +0000
From: James Houghton <jthoughton@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
	James Morse <james.morse@....com>, Suzuki K Poulose <suzuki.poulose@....com>, 
	Zenghui Yu <yuzenghui@...wei.com>, Sean Christopherson <seanjc@...gle.com>, Shuah Khan <shuah@...nel.org>, 
	Peter Xu <peterx@...hat.org>, Axel Rasmussen <axelrasmussen@...gle.com>, 
	David Matlack <dmatlack@...gle.com>, James Houghton <jthoughton@...gle.com>, kvm@...r.kernel.org, 
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev
Subject: [RFC PATCH 07/18] KVM: Provide attributes to kvm_arch_pre_set_memory_attributes

This is needed so that architectures can do the right thing (including
at least unmapping newly userfault-enabled gfns) when KVM Userfault is
enabled for a particular range.

Signed-off-by: James Houghton <jthoughton@...gle.com>
---
 virt/kvm/kvm_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 840e02c75fe3..77eb9f0de02d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2514,6 +2514,7 @@ static int kvm_vm_set_mem_attributes(struct kvm *kvm, gfn_t start, gfn_t end,
 	struct kvm_mmu_notifier_range pre_set_range = {
 		.start = start,
 		.end = end,
+		.arg.attributes = attributes,
 		.handler = kvm_pre_set_memory_attributes,
 		.on_lock = kvm_mmu_invalidate_begin,
 		.flush_on_ret = true,
-- 
2.45.2.993.g49e7a77208-goog