ARM: domains: get rid of manager mode for user domain (3c2aed5b) · Commits · 戴 / test

Since we switched to early trap initialisation in ("ARM: earlier initialization of vectors page") we haven't been writing directly to the vectors page, and so there's no need for this domain to be in manager mode. Switch it to client mode. Signed-off-by:

Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/domain.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -59,7 +59,7 @@
		#define domain_val(dom,type) ((type) << (2 * (dom)))

		#define DACR_INIT \
		(domain_val(DOMAIN_USER, DOMAIN_MANAGER) \| \
		(domain_val(DOMAIN_USER, DOMAIN_CLIENT) \| \
		domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) \| \
		domain_val(DOMAIN_TABLE, DOMAIN_MANAGER) \| \
		domain_val(DOMAIN_IO, DOMAIN_CLIENT))

arch/arm/kernel/traps.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -870,7 +870,6 @@ void __init early_trap_init(void *vectors_base)
		kuser_init(vectors_base);

		flush_icache_range(vectors, vectors + PAGE_SIZE * 2);
		modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
		#else /* ifndef CONFIG_CPU_V7M */
		/*
		* on V7-M there is no need to copy the vector table to a dedicated

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