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| author | Aneesh Kumar K.V | 2016-08-23 12:57:48 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2016-09-22 23:54:18 +0200 |
| commit | be34d300597a7a4fb38c6e3f9929af2f1faa23b8 (patch) | |
| tree | 30bc236bd0c06141386047c2bf1a1a3df8c35b5f /arch/powerpc/mm | |
| parent | powerpc/64/kexec: Fix MMU cleanup on radix (diff) | |
| download | kernel-qcow2-linux-be34d300597a7a4fb38c6e3f9929af2f1faa23b8.tar.gz kernel-qcow2-linux-be34d300597a7a4fb38c6e3f9929af2f1faa23b8.tar.xz kernel-qcow2-linux-be34d300597a7a4fb38c6e3f9929af2f1faa23b8.zip | |
powerpc/mm: Add radix flush all with IS=3
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/tlb-radix.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c index 48df05ef5231..0e49ec541ab5 100644 --- a/arch/powerpc/mm/tlb-radix.c +++ b/arch/powerpc/mm/tlb-radix.c @@ -400,3 +400,27 @@ void radix__flush_pmd_tlb_range(struct vm_area_struct *vma, radix__flush_tlb_range_psize(vma->vm_mm, start, end, MMU_PAGE_2M); } EXPORT_SYMBOL(radix__flush_pmd_tlb_range); + +void radix__flush_tlb_all(void) +{ + unsigned long rb,prs,r,rs; + unsigned long ric = RIC_FLUSH_ALL; + + rb = 0x3 << PPC_BITLSHIFT(53); /* IS = 3 */ + prs = 0; /* partition scoped */ + r = 1; /* raidx format */ + rs = 1 & ((1UL << 32) - 1); /* any LPID value to flush guest mappings */ + + asm volatile("ptesync": : :"memory"); + /* + * now flush guest entries by passing PRS = 1 and LPID != 0 + */ + asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1) + : : "r"(rb), "i"(r), "i"(1), "i"(ric), "r"(rs) : "memory"); + /* + * now flush host entires by passing PRS = 0 and LPID == 0 + */ + asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1) + : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(0) : "memory"); + asm volatile("eieio; tlbsync; ptesync": : :"memory"); +} |