MIPS: cpu: Add new cpu option for Hardware Table Walker.
Moreover, report hardware page table walker support as 'htw' in the ASE list of /proc/cpuinfo, if the core implements this feature. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7334/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -29,6 +29,9 @@
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#ifndef cpu_has_eva
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#define cpu_has_eva (cpu_data[0].options & MIPS_CPU_EVA)
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#endif
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#ifndef cpu_has_htw
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#define cpu_has_htw (cpu_data[0].options & MIPS_CPU_HTW)
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#endif
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/*
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* For the moment we don't consider R6000 and R8000 so we can assume that
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@ -365,6 +365,7 @@ enum cpu_type_enum {
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#define MIPS_CPU_TLBINV 0x02000000ull /* CPU supports TLBINV/F */
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#define MIPS_CPU_SEGMENTS 0x04000000ull /* CPU supports Segmentation Control registers */
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#define MIPS_CPU_EVA 0x80000000ull /* CPU supports Enhanced Virtual Addressing */
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#define MIPS_CPU_HTW 0x100000000ull /* CPU support Hardware Page Table Walker */
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/*
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* CPU ASE encodings
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@ -113,6 +113,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
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if (cpu_has_vz) seq_printf(m, "%s", " vz");
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if (cpu_has_msa) seq_printf(m, "%s", " msa");
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if (cpu_has_eva) seq_printf(m, "%s", " eva");
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if (cpu_has_htw) seq_printf(m, "%s", " htw");
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seq_printf(m, "\n");
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if (cpu_has_mmips) {
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