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powerpc/kuap: MMU_FTR_BOOK3S_KUAP becomes MMU_FTR_KUAP

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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@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/c8b6f7b8cd0eeaace96879ed0e0a157faa619451.1689091022.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2023-07-11 17:59:17 +02:00 committed by Michael Ellerman
parent 6b289911c8
commit 4589a2b789
5 changed files with 14 additions and 14 deletions
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2
arch/powerpc/include/asm/book3s/64/hash-pkey.h
View File

@ -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;

18
arch/powerpc/include/asm/book3s/64/kup.h
View File

@ -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;
/*

4
arch/powerpc/include/asm/mmu.h
View File

@ -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 |

2
arch/powerpc/kernel/syscall.c
View File

@ -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;
}

2
arch/powerpc/mm/book3s64/pkeys.c
View File

@ -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;
}
/*