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KVM: MMU: Make the definition of 'INVALID_GPA' common 

KVM already has a 'GPA_INVALID' defined as (~(gpa_t)0) in kvm_types.h,
and it is used by ARM code. We do not need another definition of
'INVALID_GPA' for X86 specifically.

Instead of using the common 'GPA_INVALID' for X86, replace it with
'INVALID_GPA', and change the users of 'GPA_INVALID' so that the diff
can be smaller. Also because the name 'INVALID_GPA' tells the user we
are using an invalid GPA, while the name 'GPA_INVALID' is emphasizing
the GPA is an invalid one.

No functional change intended.

Signed-off-by: Yu Zhang <yu.c.zhang@linux.intel.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20230105130127.866171-1-yu.c.zhang@linux.intel.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Yu Zhang 2023-01-05 21:01:27 +08:00 committed by Oliver Upton
parent 016cbbd2ba
commit cecafc0a83
5 changed files with 8 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/include/asm/kvm_host.h
View File

@ -916,12 +916,12 @@ void kvm_arm_vmid_clear_active(void);
static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch)
{
vcpu_arch->steal.base = GPA_INVALID;
vcpu_arch->steal.base = INVALID_GPA;
}
static inline bool kvm_arm_is_pvtime_enabled(struct kvm_vcpu_arch *vcpu_arch)
{
return (vcpu_arch->steal.base != GPA_INVALID);
return (vcpu_arch->steal.base != INVALID_GPA);
}
void kvm_set_sei_esr(struct kvm_vcpu *vcpu, u64 syndrome);

2
arch/arm64/kvm/hypercalls.c
View File

@ -198,7 +198,7 @@ int kvm_hvc_call_handler(struct kvm_vcpu *vcpu)
break;
case ARM_SMCCC_HV_PV_TIME_ST:
gpa = kvm_init_stolen_time(vcpu);
if (gpa != GPA_INVALID)
if (gpa != INVALID_GPA)
val[0] = gpa;
break;
case ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID:

8
arch/arm64/kvm/pvtime.c
View File

@ -19,7 +19,7 @@ void kvm_update_stolen_time(struct kvm_vcpu *vcpu)
u64 steal = 0;
int idx;
if (base == GPA_INVALID)
if (base == INVALID_GPA)
return;
idx = srcu_read_lock(&kvm->srcu);
@ -40,7 +40,7 @@ long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu)
switch (feature) {
case ARM_SMCCC_HV_PV_TIME_FEATURES:
case ARM_SMCCC_HV_PV_TIME_ST:
if (vcpu->arch.steal.base != GPA_INVALID)
if (vcpu->arch.steal.base != INVALID_GPA)
val = SMCCC_RET_SUCCESS;
break;
}
@ -54,7 +54,7 @@ gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu)
struct kvm *kvm = vcpu->kvm;
u64 base = vcpu->arch.steal.base;
if (base == GPA_INVALID)
if (base == INVALID_GPA)
return base;
/*
@ -89,7 +89,7 @@ int kvm_arm_pvtime_set_attr(struct kvm_vcpu *vcpu,
return -EFAULT;
if (!IS_ALIGNED(ipa, 64))
return -EINVAL;
if (vcpu->arch.steal.base != GPA_INVALID)
if (vcpu->arch.steal.base != INVALID_GPA)
return -EEXIST;
/* Check the address is in a valid memslot */

2
arch/x86/include/asm/kvm_host.h
View File

@ -134,8 +134,6 @@
#define INVALID_PAGE (~(hpa_t)0)
#define VALID_PAGE(x) ((x) != INVALID_PAGE)
#define INVALID_GPA (~(gpa_t)0)
/* KVM Hugepage definitions for x86 */
#define KVM_MAX_HUGEPAGE_LEVEL PG_LEVEL_1G
#define KVM_NR_PAGE_SIZES (KVM_MAX_HUGEPAGE_LEVEL - PG_LEVEL_4K + 1)

2
include/linux/kvm_types.h
View File

@ -40,7 +40,7 @@ typedef unsigned long gva_t;
typedef u64 gpa_t;
typedef u64 gfn_t;
#define GPA_INVALID (~(gpa_t)0)
#define INVALID_GPA (~(gpa_t)0)
typedef unsigned long hva_t;
typedef u64 hpa_t;