From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: dmatlack@google.com, seanjc@google.com, vkuznets@redhat.com
Subject: [PATCH 04/23] KVM: MMU: constify uses of struct kvm_mmu_role_regs
Date: Fri, 4 Feb 2022 06:56:59 -0500 [thread overview]
Message-ID: <20220204115718.14934-5-pbonzini@redhat.com> (raw)
In-Reply-To: <20220204115718.14934-1-pbonzini@redhat.com>
struct kvm_mmu_role_regs is computed just once and then accessed. Use
const to enforce this.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/mmu/mmu.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 0039b2f21286..3add9d8b0630 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -208,7 +208,7 @@ struct kvm_mmu_role_regs {
* the single source of truth for the MMU's state.
*/
#define BUILD_MMU_ROLE_REGS_ACCESSOR(reg, name, flag) \
-static inline bool __maybe_unused ____is_##reg##_##name(struct kvm_mmu_role_regs *regs)\
+static inline bool __maybe_unused ____is_##reg##_##name(const struct kvm_mmu_role_regs *regs)\
{ \
return !!(regs->reg & flag); \
}
@@ -255,7 +255,7 @@ static struct kvm_mmu_role_regs vcpu_to_role_regs(struct kvm_vcpu *vcpu)
return regs;
}
-static int role_regs_to_root_level(struct kvm_mmu_role_regs *regs)
+static int role_regs_to_root_level(const struct kvm_mmu_role_regs *regs)
{
if (!____is_cr0_pg(regs))
return 0;
@@ -4666,7 +4666,7 @@ static void paging32_init_context(struct kvm_mmu *context)
}
static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu,
- struct kvm_mmu_role_regs *regs)
+ const struct kvm_mmu_role_regs *regs)
{
union kvm_mmu_extended_role ext = {0};
@@ -4687,7 +4687,7 @@ static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu,
}
static union kvm_mmu_role kvm_calc_mmu_role_common(struct kvm_vcpu *vcpu,
- struct kvm_mmu_role_regs *regs,
+ const struct kvm_mmu_role_regs *regs,
bool base_only)
{
union kvm_mmu_role role = {0};
@@ -4723,7 +4723,8 @@ static inline int kvm_mmu_get_tdp_level(struct kvm_vcpu *vcpu)
static union kvm_mmu_role
kvm_calc_tdp_mmu_root_page_role(struct kvm_vcpu *vcpu,
- struct kvm_mmu_role_regs *regs, bool base_only)
+ const struct kvm_mmu_role_regs *regs,
+ bool base_only)
{
union kvm_mmu_role role = kvm_calc_mmu_role_common(vcpu, regs, base_only);
@@ -4769,7 +4770,8 @@ static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
static union kvm_mmu_role
kvm_calc_shadow_root_page_role_common(struct kvm_vcpu *vcpu,
- struct kvm_mmu_role_regs *regs, bool base_only)
+ const struct kvm_mmu_role_regs *regs,
+ bool base_only)
{
union kvm_mmu_role role = kvm_calc_mmu_role_common(vcpu, regs, base_only);
@@ -4782,7 +4784,8 @@ kvm_calc_shadow_root_page_role_common(struct kvm_vcpu *vcpu,
static union kvm_mmu_role
kvm_calc_shadow_mmu_root_page_role(struct kvm_vcpu *vcpu,
- struct kvm_mmu_role_regs *regs, bool base_only)
+ const struct kvm_mmu_role_regs *regs,
+ bool base_only)
{
union kvm_mmu_role role =
kvm_calc_shadow_root_page_role_common(vcpu, regs, base_only);
@@ -4940,7 +4943,7 @@ static void init_kvm_softmmu(struct kvm_vcpu *vcpu)
}
static union kvm_mmu_role
-kvm_calc_nested_mmu_role(struct kvm_vcpu *vcpu, struct kvm_mmu_role_regs *regs)
+kvm_calc_nested_mmu_role(struct kvm_vcpu *vcpu, const struct kvm_mmu_role_regs *regs)
{
union kvm_mmu_role role;
--
2.31.1
next prev parent reply other threads:[~2022-02-04 11:57 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 11:56 [PATCH 00/23] KVM: MMU: MMU role refactoring Paolo Bonzini
2022-02-04 11:56 ` [PATCH 01/23] KVM: MMU: pass uses_nx directly to reset_shadow_zero_bits_mask Paolo Bonzini
2022-02-04 17:59 ` David Matlack
2022-02-05 14:52 ` Paolo Bonzini
2022-02-07 16:09 ` Sean Christopherson
2022-02-07 21:50 ` David Matlack
2022-02-10 0:30 ` Sean Christopherson
2022-02-10 16:38 ` Paolo Bonzini
2022-02-04 11:56 ` [PATCH 02/23] KVM: MMU: nested EPT cannot be used in SMM Paolo Bonzini
2022-02-04 18:16 ` David Matlack
2022-02-09 22:43 ` Sean Christopherson
2022-02-04 11:56 ` [PATCH 03/23] KVM: MMU: remove valid from extended role Paolo Bonzini
2022-02-04 18:32 ` David Matlack
2022-02-05 14:50 ` Paolo Bonzini
2022-02-09 22:54 ` Sean Christopherson
2022-02-10 9:53 ` Paolo Bonzini
2022-02-04 11:56 ` Paolo Bonzini [this message]
2022-02-04 18:41 ` [PATCH 04/23] KVM: MMU: constify uses of struct kvm_mmu_role_regs David Matlack
2022-02-09 22:57 ` Sean Christopherson
2022-02-04 11:57 ` [PATCH 05/23] KVM: MMU: pull computation of kvm_mmu_role_regs to kvm_init_mmu Paolo Bonzini
2022-02-04 18:45 ` David Matlack
2022-02-04 11:57 ` [PATCH 06/23] KVM: MMU: load new PGD once nested two-dimensional paging is initialized Paolo Bonzini
2022-02-04 19:18 ` David Matlack
2022-02-07 13:50 ` Paolo Bonzini
2022-02-07 14:35 ` Paolo Bonzini
2022-02-09 12:34 ` Paolo Bonzini
2022-02-04 11:57 ` [PATCH 07/23] KVM: MMU: remove kvm_mmu_calc_root_page_role Paolo Bonzini
2022-02-04 19:32 ` David Matlack
2022-02-05 14:46 ` Paolo Bonzini
2022-02-10 0:47 ` Sean Christopherson
2022-02-10 9:52 ` Paolo Bonzini
2022-02-10 17:29 ` Sean Christopherson
2022-02-10 17:43 ` Paolo Bonzini
2022-02-04 11:57 ` [PATCH 08/23] KVM: MMU: rephrase unclear comment Paolo Bonzini
2022-02-04 19:38 ` David Matlack
2022-02-04 11:57 ` [PATCH 09/23] KVM: MMU: remove "bool base_only" arguments Paolo Bonzini
2022-02-04 19:41 ` David Matlack
2022-02-04 11:57 ` [PATCH 10/23] KVM: MMU: split cpu_role from mmu_role Paolo Bonzini
2022-02-04 21:57 ` David Matlack
2022-02-05 14:49 ` Paolo Bonzini
2022-02-07 21:38 ` David Matlack
2022-02-04 11:57 ` [PATCH 11/23] KVM: MMU: do not recompute root level from kvm_mmu_role_regs Paolo Bonzini
2022-02-07 22:10 ` David Matlack
2022-02-07 22:17 ` David Matlack
2022-02-04 11:57 ` [PATCH 12/23] KVM: MMU: remove ept_ad field Paolo Bonzini
2022-02-04 11:57 ` [PATCH 13/23] KVM: MMU: remove kvm_calc_shadow_root_page_role_common Paolo Bonzini
2022-02-07 22:25 ` David Matlack
2022-02-04 11:57 ` [PATCH 14/23] KVM: MMU: cleanup computation of MMU roles for two-dimensional paging Paolo Bonzini
2022-02-04 11:57 ` [PATCH 15/23] KVM: MMU: cleanup computation of MMU roles for shadow paging Paolo Bonzini
2022-02-04 11:57 ` [PATCH 16/23] KVM: MMU: remove extended bits from mmu_role Paolo Bonzini
2022-02-04 11:57 ` [PATCH 17/23] KVM: MMU: remove redundant bits from extended role Paolo Bonzini
2022-02-04 11:57 ` [PATCH 18/23] KVM: MMU: fetch shadow EFER.NX from MMU role Paolo Bonzini
2022-02-04 11:57 ` [PATCH 19/23] KVM: MMU: simplify and/or inline computation of shadow MMU roles Paolo Bonzini
2022-02-04 11:57 ` [PATCH 20/23] KVM: MMU: pull CPU role computation to kvm_init_mmu Paolo Bonzini
2022-02-07 22:42 ` David Matlack
2022-02-04 11:57 ` [PATCH 21/23] KVM: MMU: store shadow_root_level into mmu_role Paolo Bonzini
2022-02-07 23:00 ` David Matlack
2022-02-04 11:57 ` [PATCH 22/23] KVM: MMU: use cpu_role for root_level Paolo Bonzini
2022-02-07 23:01 ` David Matlack
2022-02-04 11:57 ` [PATCH 23/23] KVM: MMU: replace direct_map with mmu_role.direct Paolo Bonzini
2022-02-07 23:02 ` David Matlack
2022-02-07 23:08 ` [PATCH 00/23] KVM: MMU: MMU role refactoring David Matlack
2022-02-07 23:27 ` Sean Christopherson
2022-02-07 23:53 ` David Matlack
2022-02-10 1:11 ` Sean Christopherson
2022-02-10 11:58 ` Paolo Bonzini
2022-02-10 16:55 ` Sean Christopherson
2022-02-10 17:30 ` Paolo Bonzini
2022-02-10 19:28 ` Sean Christopherson
2022-02-09 22:31 ` Sean Christopherson
2022-02-10 9:54 ` Paolo Bonzini
2022-02-14 18:14 ` David Matlack
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