[PATCH 1/5] KVM: arm64: Drop direct PAGE_[SHIFT|SIZE] usage as page size

From: Anshuman Khandual
Date: Tue Aug 10 2021 - 03:02:15 EST


All instances here could just directly test against CONFIG_ARM64_XXK_PAGES
instead of evaluating via PAGE_SHIFT or PAGE_SIZE. With this change, there
will be no such usage left.

Cc: Marc Zyngier <maz@xxxxxxxxxx>
Cc: James Morse <james.morse@xxxxxxx>
Cc: Alexandru Elisei <alexandru.elisei@xxxxxxx>
Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: kvmarm@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
arch/arm64/kvm/hyp/pgtable.c | 6 +++---
arch/arm64/mm/mmu.c | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index 05321f4165e3..a6112b6d6ef6 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c
@@ -85,7 +85,7 @@ static bool kvm_level_supports_block_mapping(u32 level)
* Reject invalid block mappings and don't bother with 4TB mappings for
* 52-bit PAs.
*/
- return !(level == 0 || (PAGE_SIZE != SZ_4K && level == 1));
+ return !(level == 0 || (!IS_ENABLED(CONFIG_ARM64_4K_PAGES) && level == 1));
}

static bool kvm_block_mapping_supported(u64 addr, u64 end, u64 phys, u32 level)
@@ -155,7 +155,7 @@ static u64 kvm_pte_to_phys(kvm_pte_t pte)
{
u64 pa = pte & KVM_PTE_ADDR_MASK;

- if (PAGE_SHIFT == 16)
+ if (IS_ENABLED(CONFIG_ARM64_64K_PAGES))
pa |= FIELD_GET(KVM_PTE_ADDR_51_48, pte) << 48;

return pa;
@@ -165,7 +165,7 @@ static kvm_pte_t kvm_phys_to_pte(u64 pa)
{
kvm_pte_t pte = pa & KVM_PTE_ADDR_MASK;

- if (PAGE_SHIFT == 16)
+ if (IS_ENABLED(CONFIG_ARM64_64K_PAGES))
pte |= FIELD_PREP(KVM_PTE_ADDR_51_48, pa >> 48);

return pte;
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 9ff0de1b2b93..8fdfca179815 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -296,7 +296,7 @@ static void alloc_init_cont_pmd(pud_t *pudp, unsigned long addr,
static inline bool use_1G_block(unsigned long addr, unsigned long next,
unsigned long phys)
{
- if (PAGE_SHIFT != 12)
+ if (!IS_ENABLED(CONFIG_ARM64_4K_PAGES))
return false;

if (((addr | next | phys) & ~PUD_MASK) != 0)
--
2.20.1