Signed-off-by: Artyom Tarasenko <atar4q...@gmail.com> --- target-sparc/ldst_helper.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/target-sparc/ldst_helper.c b/target-sparc/ldst_helper.c index a85552e..c27e668 100644 --- a/target-sparc/ldst_helper.c +++ b/target-sparc/ldst_helper.c @@ -210,6 +210,27 @@ static void replace_tlb_1bit_lru(SparcTLBEntry *tlb, { unsigned int i, replace_used; + if (cpu_has_hypervisor(env1)) { + uint64_t new_vaddr = tlb_tag & ~0x1fffULL; + uint64_t new_size = 1024ULL * (8 << 3 * TTE_PGSIZE(tlb_tte)); + uint32_t new_ctx = tlb_tag & 0x1fffU; + for (i = 0; i < 64; i++) { + uint32_t ctx = tlb[i].tag & 0x1fffU; + /* check if new mapping overlaps an existing one */ + if (new_ctx == ctx) { + uint64_t vaddr = tlb[i].tag & ~0x1fffULL; + uint64_t size = 1024ULL * (8 << 3 * TTE_PGSIZE(tlb[i].tte)); + if ((new_vaddr == vaddr) || ((new_vaddr < (vaddr + size)) + && (vaddr < (new_vaddr + new_size)))) { + DPRINTF_MMU("auto demap entry [%d] %lx->%lx\n", i, vaddr, + new_vaddr); + replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1); + return; + } + } + + } + } /* Try replacing invalid entry */ for (i = 0; i < 64; i++) { if (!TTE_IS_VALID(tlb[i].tte)) { -- 2.7.2