TencentOS-kernel/arch/arm/kernel
Ard Biesheuvel 980e807ade ARM: p2v: fix handling of LPAE translation in BE mode
[ Upstream commit 4e79f0211b473f8e1eab8211a9fd50cc41a3a061 ]

When running in BE mode on LPAE hardware with a PA-to-VA translation
that exceeds 4 GB, we patch bits 39:32 of the offset into the wrong
byte of the opcode. So fix that, by rotating the offset in r0 to the
right by 8 bits, which will put the 8-bit immediate in bits 31:24.

Note that this will also move bit #22 in its correct place when
applying the rotation to the constant #0x400000.

Fixes: d9a790df8e984 ("ARM: 7883/1: fix mov to mvn conversion in case of 64 bit phys_addr_t and BE")
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:42:38 +08:00
..
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
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armksyms.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
asm-offsets.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
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entry-armv.S ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h 2021-03-16 16:28:32 +08:00
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entry-header.S ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h 2021-03-16 16:28:32 +08:00
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head.S ARM: p2v: fix handling of LPAE translation in BE mode 2021-03-16 16:42:38 +08:00
hibernate.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hw_breakpoint.c ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses 2021-03-16 16:39:42 +08:00
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ptrace.c ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook 2021-03-16 16:28:55 +08:00
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stacktrace.c ARM: 8948/1: Prevent OOB access in stacktrace 2021-03-16 16:36:48 +08:00
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traps.c ARM: 8948/1: Prevent OOB access in stacktrace 2021-03-16 16:36:48 +08:00
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