From: Huang Pei <huangpei@loongson.cn>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>, ambrosehua@gmail.com
Cc: Bibo Mao <maobibo@loongson.cn>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mips@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org, Jiaxun Yang <jiaxun.yang@flygoat.com>,
Paul Burton <paulburton@kernel.org>,
Li Xuefeng <lixuefeng@loongson.cn>,
Yang Tiezhu <yangtiezhu@loongson.cn>,
Gao Juxin <gaojuxin@loongson.cn>,
Fuxin Zhang <zhangfx@lemote.com>,
Huacai Chen <chenhuacai@loongson.cn>
Subject: [PATCH 3/4] MIPS: use 3-level pgtable for 64KB page size on MIPS_VA_BITS_48
Date: Thu, 18 Nov 2021 17:30:04 +0800 [thread overview]
Message-ID: <20211118093005.3121-3-huangpei@loongson.cn> (raw)
In-Reply-To: <20211118093005.3121-1-huangpei@loongson.cn>
It hangup when booting Loongson 3A1000 with BOTH
CONFIG_PAGE_SIZE_64KB and CONFIG_MIPS_VA_BITS_48, that it turn
out to use 2-level pgtable instead of 3-level. 64KB page size
with 2-level pgtable only cover 42 bits VA, use 3-level pgtable
to cover all 48 bits VA(55 bits)
Fixes: 1e321fa917fb ("MIPS64: Support of at least 48 bits of SEGBITS)
Signed-off-by: Huang Pei <huangpei@loongson.cn>
---
arch/mips/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index de60ad190057..0215dc1529e9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -3097,7 +3097,7 @@ config STACKTRACE_SUPPORT
config PGTABLE_LEVELS
int
default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
- default 3 if 64BIT && !PAGE_SIZE_64KB
+ default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
default 2
config MIPS_AUTO_PFN_OFFSET
--
2.20.1
next prev parent reply other threads:[~2021-11-18 9:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-18 9:30 [PATCH 1/4] MIPS: rework local_t operation on MIPS64 Huang Pei
2021-11-18 9:30 ` [PATCH 2/4] MIPS: fix tx39_flush_cache_page Huang Pei
2021-11-18 9:30 ` Huang Pei [this message]
2021-11-18 9:30 ` [PATCH 4/4] MIPS: fix FTLB configuration Huang Pei
2021-11-18 16:25 ` [PATCH 1/4] MIPS: rework local_t operation on MIPS64 kernel test robot
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