cf0b0e3712
The POWER9 ERAT flush instruction is a SLBIA with IH=7, which is a reserved value on POWER7/8. On POWER8 this invalidates the SLB entries above index 0, similarly to SLBIA IH=0. If the SLB entries are invalidated, and then the guest is bypassed, the host SLB does not get re-loaded, so the bolted entries above 0 will be lost. This can result in kernel stack access causing a SLB fault. Kernel stack access causing a SLB fault was responsible for the infamous mega bug (search "Fix SLB reload bug"). Although since commit |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| book3s.c | ||
| book3s.h | ||
| book3s_32_mmu.c | ||
| book3s_32_mmu_host.c | ||
| book3s_32_sr.S | ||
| book3s_64_entry.S | ||
| book3s_64_mmu.c | ||
| book3s_64_mmu_host.c | ||
| book3s_64_mmu_hv.c | ||
| book3s_64_mmu_radix.c | ||
| book3s_64_slb.S | ||
| book3s_64_vio.c | ||
| book3s_64_vio_hv.c | ||
| book3s_emulate.c | ||
| book3s_exports.c | ||
| book3s_hv.c | ||
| book3s_hv_builtin.c | ||
| book3s_hv_hmi.c | ||
| book3s_hv_interrupts.S | ||
| book3s_hv_nested.c | ||
| book3s_hv_p9_entry.c | ||
| book3s_hv_ras.c | ||
| book3s_hv_rm_mmu.c | ||
| book3s_hv_rm_xics.c | ||
| book3s_hv_rm_xive.c | ||
| book3s_hv_rmhandlers.S | ||
| book3s_hv_tm.c | ||
| book3s_hv_tm_builtin.c | ||
| book3s_hv_uvmem.c | ||
| book3s_interrupts.S | ||
| book3s_mmu_hpte.c | ||
| book3s_paired_singles.c | ||
| book3s_pr.c | ||
| book3s_pr_papr.c | ||
| book3s_rmhandlers.S | ||
| book3s_rtas.c | ||
| book3s_segment.S | ||
| book3s_xics.c | ||
| book3s_xics.h | ||
| book3s_xive.c | ||
| book3s_xive.h | ||
| book3s_xive_native.c | ||
| book3s_xive_template.c | ||
| booke.c | ||
| booke.h | ||
| booke_emulate.c | ||
| booke_interrupts.S | ||
| bookehv_interrupts.S | ||
| e500.c | ||
| e500.h | ||
| e500_emulate.c | ||
| e500_mmu.c | ||
| e500_mmu_host.c | ||
| e500_mmu_host.h | ||
| e500mc.c | ||
| emulate.c | ||
| emulate_loadstore.c | ||
| fpu.S | ||
| irq.h | ||
| mpic.c | ||
| powerpc.c | ||
| timing.c | ||
| timing.h | ||
| tm.S | ||
| trace.h | ||
| trace_book3s.h | ||
| trace_booke.h | ||
| trace_hv.h | ||
| trace_pr.h | ||