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powerpc/radix_mmu: Apply errata fixes for POWER9 TLB invalidation bug

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Found in Linux, the only apparent source of errata documentation.
This commit is contained in:
Justin Hibbits 2020-05-14 10:50:27 -05:00 committed by Piotr Kubaj
parent ac19bf854b
commit 7d7f26f5b6
1 changed files with 19 additions and 1 deletions
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20
sys/powerpc/aim/mmu_radix.c
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@ -193,7 +193,19 @@ radix_tlbie(uint8_t ric, uint8_t prs, uint16_t is, uint32_t pid, uint32_t lpid,
rs = ((uint64_t)pid << 32) | lpid;
rb = va | is | ap;
__asm __volatile(PPC_TLBIE_5(%0, %1, %2, %3, 1) : :
"r" (rb), "r" (rs), "i" (ric), "i" (prs));
"r" (rb), "r" (rs), "i" (ric), "i" (prs) : "memory");
}
static __inline void
radix_tlbie_fixup(uint32_t pid, vm_offset_t va, int ap)
{
__asm __volatile("ptesync" ::: "memory");
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, 0, 0, va, ap);
__asm __volatile("ptesync" ::: "memory");
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, pid, 0, va, ap);
}
static __inline void
@ -202,6 +214,7 @@ radix_tlbie_invlpg_user_4k(uint32_t pid, vm_offset_t va)
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, pid, 0, va, TLBIE_ACTUAL_PAGE_4K);
radix_tlbie_fixup(pid, va, TLBIE_ACTUAL_PAGE_4K);
}
static __inline void
@ -210,6 +223,7 @@ radix_tlbie_invlpg_user_2m(uint32_t pid, vm_offset_t va)
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, pid, 0, va, TLBIE_ACTUAL_PAGE_2M);
radix_tlbie_fixup(pid, va, TLBIE_ACTUAL_PAGE_2M);
}
static __inline void
@ -234,6 +248,7 @@ radix_tlbie_invlpg_kernel_4k(vm_offset_t va)
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, 0, 0, va, TLBIE_ACTUAL_PAGE_4K);
radix_tlbie_fixup(0, va, TLBIE_ACTUAL_PAGE_4K);
}
static __inline void
@ -242,6 +257,7 @@ radix_tlbie_invlpg_kernel_2m(vm_offset_t va)
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, 0, 0, va, TLBIE_ACTUAL_PAGE_2M);
radix_tlbie_fixup(0, va, TLBIE_ACTUAL_PAGE_2M);
}
/* 1GB pages aren't currently supported. */
@ -251,6 +267,7 @@ radix_tlbie_invlpg_kernel_1g(vm_offset_t va)
radix_tlbie(TLBIE_RIC_INVALIDATE_TLB, TLBIE_PRS_PROCESS_SCOPE,
TLBIEL_INVAL_PAGE, 0, 0, va, TLBIE_ACTUAL_PAGE_1G);
radix_tlbie_fixup(0, va, TLBIE_ACTUAL_PAGE_1G);
}
static __inline void
@ -2757,6 +2774,7 @@ pmap_promote_l3e(pmap_t pmap, pml3_entry_t *pde, vm_offset_t va,
pmap_pv_promote_l3e(pmap, va, newpde & PG_PS_FRAME, lockp);
pte_store(pde, PG_PROMOTED | newpde);
ptesync();
atomic_add_long(&pmap_l3e_promotions, 1);
CTR2(KTR_PMAP, "pmap_promote_l3e: success for va %#lx"
" in pmap %p", va, pmap);