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Message-ID: <d2fa7cc459785999f903f60d4064946fc580c9f3.1688373335.git.christophe.leroy@csgroup.eu>
Date: Mon, 3 Jul 2023 10:48:09 +0200
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 5/9] powerpc/kuap: MMU_FTR_BOOK3S_KUAP becomes MMU_FTR_KUAP
In order to reuse MMU_FTR_BOOK3S_KUAP for other targets than BOOK3S,
rename it MMU_FTR_KUAP.
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
arch/powerpc/include/asm/book3s/64/hash-pkey.h | 2 +-
arch/powerpc/include/asm/book3s/64/kup.h | 18 +++++++++---------
arch/powerpc/include/asm/mmu.h | 4 ++--
arch/powerpc/kernel/syscall.c | 2 +-
arch/powerpc/mm/book3s64/pkeys.c | 2 +-
5 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/hash-pkey.h b/arch/powerpc/include/asm/book3s/64/hash-pkey.h
index f1e60d579f6c..6c5564c4fae4 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-pkey.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-pkey.h
@@ -24,7 +24,7 @@ static inline u64 pte_to_hpte_pkey_bits(u64 pteflags, unsigned long flags)
((pteflags & H_PTE_PKEY_BIT1) ? HPTE_R_KEY_BIT1 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT0) ? HPTE_R_KEY_BIT0 : 0x0UL));
- if (mmu_has_feature(MMU_FTR_BOOK3S_KUAP) ||
+ if (mmu_has_feature(MMU_FTR_KUAP) ||
mmu_has_feature(MMU_FTR_BOOK3S_KUEP)) {
if ((pte_pkey == 0) && (flags & HPTE_USE_KERNEL_KEY))
return HASH_DEFAULT_KERNEL_KEY;
diff --git a/arch/powerpc/include/asm/book3s/64/kup.h b/arch/powerpc/include/asm/book3s/64/kup.h
index 2a7bd3ecc556..72fc4263ed26 100644
--- a/arch/powerpc/include/asm/book3s/64/kup.h
+++ b/arch/powerpc/include/asm/book3s/64/kup.h
@@ -31,7 +31,7 @@
mfspr \gpr2, SPRN_AMR
cmpd \gpr1, \gpr2
beq 99f
- END_MMU_FTR_SECTION_NESTED_IFCLR(MMU_FTR_BOOK3S_KUAP, 68)
+ END_MMU_FTR_SECTION_NESTED_IFCLR(MMU_FTR_KUAP, 68)
isync
mtspr SPRN_AMR, \gpr1
@@ -78,7 +78,7 @@
* No need to restore IAMR when returning to kernel space.
*/
100:
- END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_BOOK3S_KUAP, 67)
+ END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 67)
#endif
.endm
@@ -91,7 +91,7 @@
LOAD_REG_IMMEDIATE(\gpr2, AMR_KUAP_BLOCKED)
999: tdne \gpr1, \gpr2
EMIT_WARN_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE)
- END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_BOOK3S_KUAP, 67)
+ END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 67)
#endif
.endm
#endif
@@ -130,7 +130,7 @@
*/
BEGIN_MMU_FTR_SECTION_NESTED(68)
b 100f // skip_save_amr
- END_MMU_FTR_SECTION_NESTED_IFCLR(MMU_FTR_PKEY | MMU_FTR_BOOK3S_KUAP, 68)
+ END_MMU_FTR_SECTION_NESTED_IFCLR(MMU_FTR_PKEY | MMU_FTR_KUAP, 68)
/*
* if pkey is disabled and we are entering from userspace
@@ -166,7 +166,7 @@
mtspr SPRN_AMR, \gpr2
isync
102:
- END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_BOOK3S_KUAP, 69)
+ END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 69)
/*
* if entering from kernel we don't need save IAMR
@@ -232,7 +232,7 @@ static inline u64 current_thread_iamr(void)
static __always_inline bool kuap_is_disabled(void)
{
- return !mmu_has_feature(MMU_FTR_BOOK3S_KUAP);
+ return !mmu_has_feature(MMU_FTR_KUAP);
}
static inline void kuap_user_restore(struct pt_regs *regs)
@@ -243,7 +243,7 @@ static inline void kuap_user_restore(struct pt_regs *regs)
if (!mmu_has_feature(MMU_FTR_PKEY))
return;
- if (!mmu_has_feature(MMU_FTR_BOOK3S_KUAP)) {
+ if (!mmu_has_feature(MMU_FTR_KUAP)) {
amr = mfspr(SPRN_AMR);
if (amr != regs->amr)
restore_amr = true;
@@ -317,7 +317,7 @@ static inline unsigned long get_kuap(void)
* This has no effect in terms of actually blocking things on hash,
* so it doesn't break anything.
*/
- if (!mmu_has_feature(MMU_FTR_BOOK3S_KUAP))
+ if (!mmu_has_feature(MMU_FTR_KUAP))
return AMR_KUAP_BLOCKED;
return mfspr(SPRN_AMR);
@@ -325,7 +325,7 @@ static inline unsigned long get_kuap(void)
static __always_inline void set_kuap(unsigned long value)
{
- if (!mmu_has_feature(MMU_FTR_BOOK3S_KUAP))
+ if (!mmu_has_feature(MMU_FTR_KUAP))
return;
/*
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 94b981152667..82af2e2c5eca 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -33,7 +33,7 @@
* key 0 controlling userspace addresses on radix
* Key 3 on hash
*/
-#define MMU_FTR_BOOK3S_KUAP ASM_CONST(0x00000200)
+#define MMU_FTR_KUAP ASM_CONST(0x00000200)
/*
* Supports KUEP feature
@@ -188,7 +188,7 @@ enum {
#endif /* CONFIG_PPC_RADIX_MMU */
#endif
#ifdef CONFIG_PPC_KUAP
- MMU_FTR_BOOK3S_KUAP |
+ MMU_FTR_KUAP |
#endif /* CONFIG_PPC_KUAP */
#ifdef CONFIG_PPC_MEM_KEYS
MMU_FTR_PKEY |
diff --git a/arch/powerpc/kernel/syscall.c b/arch/powerpc/kernel/syscall.c
index 18b9d325395f..77fedb190c93 100644
--- a/arch/powerpc/kernel/syscall.c
+++ b/arch/powerpc/kernel/syscall.c
@@ -46,7 +46,7 @@ notrace long system_call_exception(struct pt_regs *regs, unsigned long r0)
iamr = mfspr(SPRN_IAMR);
regs->amr = amr;
regs->iamr = iamr;
- if (mmu_has_feature(MMU_FTR_BOOK3S_KUAP)) {
+ if (mmu_has_feature(MMU_FTR_KUAP)) {
mtspr(SPRN_AMR, AMR_KUAP_BLOCKED);
flush_needed = true;
}
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index 1d2675ab6711..125733962033 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -291,7 +291,7 @@ void setup_kuap(bool disabled)
if (smp_processor_id() == boot_cpuid) {
pr_info("Activating Kernel Userspace Access Prevention\n");
- cur_cpu_spec->mmu_features |= MMU_FTR_BOOK3S_KUAP;
+ cur_cpu_spec->mmu_features |= MMU_FTR_KUAP;
}
/*
--
2.41.0
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