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-rw-r--r--arch/arm64/include/asm/el2_setup.h24
-rw-r--r--arch/arm64/include/asm/kernel-pgtable.h2
-rw-r--r--arch/arm64/include/asm/kvm_emulate.h62
-rw-r--r--arch/arm64/include/asm/kvm_host.h38
-rw-r--r--arch/arm64/include/asm/pgtable.h2
-rw-r--r--arch/arm64/include/asm/tlbflush.h9
6 files changed, 46 insertions, 91 deletions
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 1e7c7475e43f..ba5df0df02a4 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -298,19 +298,6 @@
.Lskip_gcs_\@:
.endm
-.macro __init_el2_mpam
- /* Memory Partitioning And Monitoring: disable EL2 traps */
- mrs x1, id_aa64pfr0_el1
- ubfx x0, x1, #ID_AA64PFR0_EL1_MPAM_SHIFT, #4
- cbz x0, .Lskip_mpam_\@ // skip if no MPAM
- msr_s SYS_MPAM2_EL2, xzr // use the default partition
- // and disable lower traps
- mrs_s x0, SYS_MPAMIDR_EL1
- tbz x0, #MPAMIDR_EL1_HAS_HCR_SHIFT, .Lskip_mpam_\@ // skip if no MPAMHCR reg
- msr_s SYS_MPAMHCR_EL2, xzr // clear TRAP_MPAMIDR_EL1 -> EL2
-.Lskip_mpam_\@:
-.endm
-
/**
* Initialize EL2 registers to sane values. This should be called early on all
* cores that were booted in EL2. Note that everything gets initialised as
@@ -328,7 +315,6 @@
__init_el2_stage2
__init_el2_gicv3
__init_el2_hstr
- __init_el2_mpam
__init_el2_nvhe_idregs
__init_el2_cptr
__init_el2_fgt
@@ -375,6 +361,16 @@
#endif
.macro finalise_el2_state
+ check_override id_aa64pfr0, ID_AA64PFR0_EL1_MPAM_SHIFT, .Linit_mpam_\@, .Lskip_mpam_\@, x1, x2
+
+.Linit_mpam_\@:
+ msr_s SYS_MPAM2_EL2, xzr // use the default partition
+ // and disable lower traps
+ mrs_s x0, SYS_MPAMIDR_EL1
+ tbz x0, #MPAMIDR_EL1_HAS_HCR_SHIFT, .Lskip_mpam_\@ // skip if no MPAMHCR reg
+ msr_s SYS_MPAMHCR_EL2, xzr // clear TRAP_MPAMIDR_EL1 -> EL2
+
+.Lskip_mpam_\@:
check_override id_aa64pfr0, ID_AA64PFR0_EL1_SVE_SHIFT, .Linit_sve_\@, .Lskip_sve_\@, x1, x2
.Linit_sve_\@: /* SVE register access */
diff --git a/arch/arm64/include/asm/kernel-pgtable.h b/arch/arm64/include/asm/kernel-pgtable.h
index 9e93733523f6..74a4f738c5f5 100644
--- a/arch/arm64/include/asm/kernel-pgtable.h
+++ b/arch/arm64/include/asm/kernel-pgtable.h
@@ -58,7 +58,7 @@
#define INIT_DIR_SIZE (PAGE_SIZE * (EARLY_PAGES(SWAPPER_PGTABLE_LEVELS, KIMAGE_VADDR, _end, EXTRA_PAGE) \
+ EARLY_SEGMENT_EXTRA_PAGES))
-#define INIT_IDMAP_DIR_PAGES (EARLY_PAGES(INIT_IDMAP_PGTABLE_LEVELS, KIMAGE_VADDR, _end, 1))
+#define INIT_IDMAP_DIR_PAGES (EARLY_PAGES(INIT_IDMAP_PGTABLE_LEVELS, KIMAGE_VADDR, kimage_limit, 1))
#define INIT_IDMAP_DIR_SIZE ((INIT_IDMAP_DIR_PAGES + EARLY_IDMAP_EXTRA_PAGES) * PAGE_SIZE)
#define INIT_IDMAP_FDT_PAGES (EARLY_PAGES(INIT_IDMAP_PGTABLE_LEVELS, 0UL, UL(MAX_FDT_SIZE), 1) - 1)
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index bd020fc28aa9..0720898f563e 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -561,68 +561,6 @@ static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu)
vcpu_set_flag((v), e); \
} while (0)
-#define __build_check_all_or_none(r, bits) \
- BUILD_BUG_ON(((r) & (bits)) && ((r) & (bits)) != (bits))
-
-#define __cpacr_to_cptr_clr(clr, set) \
- ({ \
- u64 cptr = 0; \
- \
- if ((set) & CPACR_EL1_FPEN) \
- cptr |= CPTR_EL2_TFP; \
- if ((set) & CPACR_EL1_ZEN) \
- cptr |= CPTR_EL2_TZ; \
- if ((set) & CPACR_EL1_SMEN) \
- cptr |= CPTR_EL2_TSM; \
- if ((clr) & CPACR_EL1_TTA) \
- cptr |= CPTR_EL2_TTA; \
- if ((clr) & CPTR_EL2_TAM) \
- cptr |= CPTR_EL2_TAM; \
- if ((clr) & CPTR_EL2_TCPAC) \
- cptr |= CPTR_EL2_TCPAC; \
- \
- cptr; \
- })
-
-#define __cpacr_to_cptr_set(clr, set) \
- ({ \
- u64 cptr = 0; \
- \
- if ((clr) & CPACR_EL1_FPEN) \
- cptr |= CPTR_EL2_TFP; \
- if ((clr) & CPACR_EL1_ZEN) \
- cptr |= CPTR_EL2_TZ; \
- if ((clr) & CPACR_EL1_SMEN) \
- cptr |= CPTR_EL2_TSM; \
- if ((set) & CPACR_EL1_TTA) \
- cptr |= CPTR_EL2_TTA; \
- if ((set) & CPTR_EL2_TAM) \
- cptr |= CPTR_EL2_TAM; \
- if ((set) & CPTR_EL2_TCPAC) \
- cptr |= CPTR_EL2_TCPAC; \
- \
- cptr; \
- })
-
-#define cpacr_clear_set(clr, set) \
- do { \
- BUILD_BUG_ON((set) & CPTR_VHE_EL2_RES0); \
- BUILD_BUG_ON((clr) & CPACR_EL1_E0POE); \
- __build_check_all_or_none((clr), CPACR_EL1_FPEN); \
- __build_check_all_or_none((set), CPACR_EL1_FPEN); \
- __build_check_all_or_none((clr), CPACR_EL1_ZEN); \
- __build_check_all_or_none((set), CPACR_EL1_ZEN); \
- __build_check_all_or_none((clr), CPACR_EL1_SMEN); \
- __build_check_all_or_none((set), CPACR_EL1_SMEN); \
- \
- if (has_vhe() || has_hvhe()) \
- sysreg_clear_set(cpacr_el1, clr, set); \
- else \
- sysreg_clear_set(cptr_el2, \
- __cpacr_to_cptr_clr(clr, set), \
- __cpacr_to_cptr_set(clr, set));\
- } while (0)
-
/*
* Returns a 'sanitised' view of CPTR_EL2, translating from nVHE to the VHE
* format if E2H isn't set.
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 6ce2c5173482..d27079968341 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1107,14 +1107,36 @@ static inline u64 *___ctxt_sys_reg(const struct kvm_cpu_context *ctxt, int r)
#define ctxt_sys_reg(c,r) (*__ctxt_sys_reg(c,r))
u64 kvm_vcpu_apply_reg_masks(const struct kvm_vcpu *, enum vcpu_sysreg, u64);
+
+#define __vcpu_assign_sys_reg(v, r, val) \
+ do { \
+ const struct kvm_cpu_context *ctxt = &(v)->arch.ctxt; \
+ u64 __v = (val); \
+ if (vcpu_has_nv((v)) && (r) >= __SANITISED_REG_START__) \
+ __v = kvm_vcpu_apply_reg_masks((v), (r), __v); \
+ \
+ ctxt_sys_reg(ctxt, (r)) = __v; \
+ } while (0)
+
+#define __vcpu_rmw_sys_reg(v, r, op, val) \
+ do { \
+ const struct kvm_cpu_context *ctxt = &(v)->arch.ctxt; \
+ u64 __v = ctxt_sys_reg(ctxt, (r)); \
+ __v op (val); \
+ if (vcpu_has_nv((v)) && (r) >= __SANITISED_REG_START__) \
+ __v = kvm_vcpu_apply_reg_masks((v), (r), __v); \
+ \
+ ctxt_sys_reg(ctxt, (r)) = __v; \
+ } while (0)
+
#define __vcpu_sys_reg(v,r) \
- (*({ \
+ ({ \
const struct kvm_cpu_context *ctxt = &(v)->arch.ctxt; \
- u64 *__r = __ctxt_sys_reg(ctxt, (r)); \
+ u64 __v = ctxt_sys_reg(ctxt, (r)); \
if (vcpu_has_nv((v)) && (r) >= __SANITISED_REG_START__) \
- *__r = kvm_vcpu_apply_reg_masks((v), (r), *__r);\
- __r; \
- }))
+ __v = kvm_vcpu_apply_reg_masks((v), (r), __v); \
+ __v; \
+ })
u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg);
void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg);
@@ -1267,9 +1289,8 @@ void kvm_arm_resume_guest(struct kvm *kvm);
})
/*
- * The couple of isb() below are there to guarantee the same behaviour
- * on VHE as on !VHE, where the eret to EL1 acts as a context
- * synchronization event.
+ * The isb() below is there to guarantee the same behaviour on VHE as on !VHE,
+ * where the eret to EL1 acts as a context synchronization event.
*/
#define kvm_call_hyp(f, ...) \
do { \
@@ -1287,7 +1308,6 @@ void kvm_arm_resume_guest(struct kvm *kvm);
\
if (has_vhe()) { \
ret = f(__VA_ARGS__); \
- isb(); \
} else { \
ret = kvm_call_hyp_nvhe(f, ##__VA_ARGS__); \
} \
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 88db8a0c0b37..192d86e1cc76 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -563,7 +563,7 @@ static inline pte_t pte_swp_mkexclusive(pte_t pte)
return set_pte_bit(pte, __pgprot(PTE_SWP_EXCLUSIVE));
}
-static inline int pte_swp_exclusive(pte_t pte)
+static inline bool pte_swp_exclusive(pte_t pte)
{
return pte_val(pte) & PTE_SWP_EXCLUSIVE;
}
diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index eba1a98657f1..aa9efee17277 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -323,13 +323,14 @@ static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
}
/*
- * If mprotect/munmap/etc occurs during TLB batched flushing, we need to
- * synchronise all the TLBI issued with a DSB to avoid the race mentioned in
- * flush_tlb_batched_pending().
+ * If mprotect/munmap/etc occurs during TLB batched flushing, we need to ensure
+ * all the previously issued TLBIs targeting mm have completed. But since we
+ * can be executing on a remote CPU, a DSB cannot guarantee this like it can
+ * for arch_tlbbatch_flush(). Our only option is to flush the entire mm.
*/
static inline void arch_flush_tlb_batched_pending(struct mm_struct *mm)
{
- dsb(ish);
+ flush_tlb_mm(mm);
}
/*
generated by cgit v1.2.3 (git 2.39.1) at 2026-01-09 00:04:48 +0000