From: Ben Gardon <bgardon@google.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Sean Christopherson <seanjc@google.com>,
David Matlack <dmatlack@google.com>,
Vipin Sharma <vipinsh@google.com>,
Ricardo Koller <ricarkol@google.com>,
Ben Gardon <bgardon@google.com>
Subject: [PATCH 09/21] KVM: x86/MMU: Move paging_tmpl.h includes to shadow_mmu.c
Date: Thu, 2 Feb 2023 18:27:57 +0000 [thread overview]
Message-ID: <20230202182809.1929122-10-bgardon@google.com> (raw)
In-Reply-To: <20230202182809.1929122-1-bgardon@google.com>
Move the integration point for paging_tmpl.h to shadow_mmu.c since
paging_tmpl.h is ostensibly part of the Shadow MMU. This requires
modifying some of the definitions to be non-static and then exporting
the pre-processed function names through shadow_mmu.h since they are
needed for mmu context callbacks in mmu.c. This will facilitate cleanups
in following commits because many of the functions being exposed by
shadow_mmu.h are only needed by paging_tmpl.h. Those functions will no
longer need to be exported.
sync_mmio_spte() is only used by paging_tmpl.h, so move it along with
the includes.
No functional change intended.
Signed-off-by: Ben Gardon <bgardon@google.com>
---
arch/x86/kvm/mmu/mmu.c | 29 -----------------------------
arch/x86/kvm/mmu/paging_tmpl.h | 11 +++++------
arch/x86/kvm/mmu/shadow_mmu.c | 31 +++++++++++++++++++++++++++++++
arch/x86/kvm/mmu/shadow_mmu.h | 25 ++++++++++++++++++++++++-
4 files changed, 60 insertions(+), 36 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index da290bfca0137..cef481a17a519 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1697,35 +1697,6 @@ static unsigned long get_cr3(struct kvm_vcpu *vcpu)
return kvm_read_cr3(vcpu);
}
-static bool sync_mmio_spte(struct kvm_vcpu *vcpu, u64 *sptep, gfn_t gfn,
- unsigned int access)
-{
- if (unlikely(is_mmio_spte(*sptep))) {
- if (gfn != get_mmio_spte_gfn(*sptep)) {
- mmu_spte_clear_no_track(sptep);
- return true;
- }
-
- mark_mmio_spte(vcpu, sptep, gfn, access);
- return true;
- }
-
- return false;
-}
-
-#define PTTYPE_EPT 18 /* arbitrary */
-#define PTTYPE PTTYPE_EPT
-#include "paging_tmpl.h"
-#undef PTTYPE
-
-#define PTTYPE 64
-#include "paging_tmpl.h"
-#undef PTTYPE
-
-#define PTTYPE 32
-#include "paging_tmpl.h"
-#undef PTTYPE
-
static void __reset_rsvds_bits_mask(struct rsvd_bits_validate *rsvd_check,
u64 pa_bits_rsvd, int level, bool nx,
bool gbpages, bool pse, bool amd)
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 730b413eebfde..1251357794538 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -787,7 +787,7 @@ FNAME(is_self_change_mapping)(struct kvm_vcpu *vcpu,
* Returns: 1 if we need to emulate the instruction, 0 otherwise, or
* a negative value on error.
*/
-static int FNAME(page_fault)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
+int FNAME(page_fault)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
{
struct guest_walker walker;
int r;
@@ -889,7 +889,7 @@ static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp)
return gfn_to_gpa(sp->gfn) + offset * sizeof(pt_element_t);
}
-static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)
+void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)
{
struct kvm_shadow_walk_iterator iterator;
struct kvm_mmu_page *sp;
@@ -949,9 +949,8 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)
}
/* Note, @addr is a GPA when gva_to_gpa() translates an L2 GPA to an L1 GPA. */
-static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
- gpa_t addr, u64 access,
- struct x86_exception *exception)
+gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, gpa_t addr,
+ u64 access, struct x86_exception *exception)
{
struct guest_walker walker;
gpa_t gpa = INVALID_GPA;
@@ -984,7 +983,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
* 0: the sp is synced and no tlb flushing is required
* > 0: the sp is synced and tlb flushing is required
*/
-static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
+int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
{
union kvm_mmu_page_role root_role = vcpu->arch.mmu->root_role;
int i;
diff --git a/arch/x86/kvm/mmu/shadow_mmu.c b/arch/x86/kvm/mmu/shadow_mmu.c
index f3e2ed5b675eb..c7cfdc6f51b53 100644
--- a/arch/x86/kvm/mmu/shadow_mmu.c
+++ b/arch/x86/kvm/mmu/shadow_mmu.c
@@ -12,6 +12,8 @@
* Yaniv Kamay <yaniv@qumranet.com>
* Avi Kivity <avi@qumranet.com>
*/
+
+#include "ioapic.h"
#include "mmu.h"
#include "mmu_internal.h"
#include "mmutrace.h"
@@ -2809,6 +2811,35 @@ void shadow_page_table_clear_flood(struct kvm_vcpu *vcpu, gva_t addr)
walk_shadow_page_lockless_end(vcpu);
}
+static bool sync_mmio_spte(struct kvm_vcpu *vcpu, u64 *sptep, gfn_t gfn,
+ unsigned int access)
+{
+ if (unlikely(is_mmio_spte(*sptep))) {
+ if (gfn != get_mmio_spte_gfn(*sptep)) {
+ mmu_spte_clear_no_track(sptep);
+ return true;
+ }
+
+ mark_mmio_spte(vcpu, sptep, gfn, access);
+ return true;
+ }
+
+ return false;
+}
+
+#define PTTYPE_EPT 18 /* arbitrary */
+#define PTTYPE PTTYPE_EPT
+#include "paging_tmpl.h"
+#undef PTTYPE
+
+#define PTTYPE 64
+#include "paging_tmpl.h"
+#undef PTTYPE
+
+#define PTTYPE 32
+#include "paging_tmpl.h"
+#undef PTTYPE
+
static bool is_obsolete_root(struct kvm *kvm, hpa_t root_hpa)
{
struct kvm_mmu_page *sp;
diff --git a/arch/x86/kvm/mmu/shadow_mmu.h b/arch/x86/kvm/mmu/shadow_mmu.h
index 4534eadc9a17c..7faf8b06e68f1 100644
--- a/arch/x86/kvm/mmu/shadow_mmu.h
+++ b/arch/x86/kvm/mmu/shadow_mmu.h
@@ -86,7 +86,6 @@ bool kvm_test_age_rmap(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
int level, pte_t unused);
void drop_parent_pte(struct kvm_mmu_page *sp, u64 *parent_pte);
-int nonpaging_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp);
int mmu_sync_children(struct kvm_vcpu *vcpu, struct kvm_mmu_page *parent,
bool can_yield);
void __clear_sp_write_flooding_count(struct kvm_mmu_page *sp);
@@ -163,4 +162,28 @@ void kvm_rmap_zap_collapsible_sptes(struct kvm *kvm,
const struct kvm_memory_slot *slot);
unsigned long mmu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc);
+
+/* Exports from paging_tmpl.h */
+gpa_t paging32_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
+ gpa_t vaddr, u64 access,
+ struct x86_exception *exception);
+gpa_t paging64_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
+ gpa_t vaddr, u64 access,
+ struct x86_exception *exception);
+gpa_t ept_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, gpa_t vaddr,
+ u64 access, struct x86_exception *exception);
+
+int paging32_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
+int paging64_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
+int ept_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
+
+int paging32_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp);
+int paging64_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp);
+int ept_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp);
+/* Defined in shadow_mmu.c. */
+int nonpaging_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp);
+
+void paging32_invlpg(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root);
+void paging64_invlpg(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root);
+void ept_invlpg(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root);
#endif /* __KVM_X86_MMU_SHADOW_MMU_H */
--
2.39.1.519.gcb327c4b5f-goog
next prev parent reply other threads:[~2023-02-02 18:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 18:27 [PATCH 00/21] KVM: x86/MMU: Formalize the Shadow MMU Ben Gardon
2023-02-02 18:27 ` [PATCH 01/21] KVM: x86/mmu: Rename slot rmap walkers to add clarity and clean up code Ben Gardon
2023-02-02 18:27 ` [PATCH 02/21] KVM: x86/mmu: Replace comment with an actual lockdep assertion on mmu_lock Ben Gardon
2023-02-02 18:27 ` [PATCH 03/21] KVM: x86/mmu: Clean up mmu.c functions that put return type on separate line Ben Gardon
2023-02-02 18:27 ` [PATCH 04/21] KVM: x86/MMU: Add shadow_mmu.(c|h) Ben Gardon
2023-02-02 18:27 ` [PATCH 05/21] KVM: x86/MMU: Expose functions for the Shadow MMU Ben Gardon
2023-02-02 18:27 ` [PATCH 06/21] KVM: x86/mmu: Get rid of is_cpuid_PSE36() Ben Gardon
2023-03-20 18:51 ` Sean Christopherson
2023-02-02 18:27 ` [PATCH 08/21] KVM: x86/MMU: Expose functions for paging_tmpl.h Ben Gardon
2023-02-02 18:27 ` Ben Gardon [this message]
2023-03-20 18:41 ` [PATCH 09/21] KVM: x86/MMU: Move paging_tmpl.h includes to shadow_mmu.c Sean Christopherson
2023-03-21 18:43 ` Ben Gardon
2023-02-02 18:27 ` [PATCH 10/21] KVM: x86/MMU: Clean up Shadow MMU exports Ben Gardon
2023-02-02 18:27 ` [PATCH 11/21] KVM: x86/MMU: Cleanup shrinker interface with Shadow MMU Ben Gardon
2023-02-04 13:52 ` kernel test robot
2023-02-04 19:10 ` kernel test robot
2023-02-02 18:28 ` [PATCH 12/21] KVM: x86/MMU: Clean up naming of exported Shadow MMU functions Ben Gardon
2023-02-02 18:28 ` [PATCH 13/21] KVM: x86/MMU: Fix naming on prepare / commit zap page functions Ben Gardon
2023-02-02 18:28 ` [PATCH 14/21] KVM: x86/MMU: Factor Shadow MMU wrprot / clear dirty ops out of mmu.c Ben Gardon
2023-02-02 18:28 ` [PATCH 15/21] KVM: x86/MMU: Remove unneeded exports from shadow_mmu.c Ben Gardon
2023-02-04 14:44 ` kernel test robot
2023-02-02 18:28 ` [PATCH 16/21] KVM: x86/MMU: Wrap uses of kvm_handle_gfn_range in mmu.c Ben Gardon
2023-02-02 18:28 ` [PATCH 17/21] KVM: x86/MMU: Add kvm_shadow_mmu_ to the last few functions in shadow_mmu.h Ben Gardon
2023-02-02 18:28 ` [PATCH 18/21] KVM: x86/mmu: Move split cache topup functions to shadow_mmu.c Ben Gardon
2023-02-02 18:28 ` [PATCH 19/21] KVM: x86/mmu: Move Shadow MMU part of kvm_mmu_zap_all() to shadow_mmu.h Ben Gardon
2023-02-02 18:28 ` [PATCH 20/21] KVM: x86/mmu: Move Shadow MMU init/teardown to shadow_mmu.c Ben Gardon
2023-02-02 18:28 ` [PATCH 21/21] KVM: x86/mmu: Split out Shadow MMU lockless walk begin/end Ben Gardon
2023-03-20 19:09 ` [PATCH 00/21] KVM: x86/MMU: Formalize the Shadow MMU Sean Christopherson
2023-03-23 23:02 ` Sean Christopherson
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=20230202182809.1929122-10-bgardon@google.com \
--to=bgardon@google.com \
--cc=dmatlack@google.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=peterx@redhat.com \
--cc=ricarkol@google.com \
--cc=seanjc@google.com \
--cc=vipinsh@google.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).