Commit 140aada4 authored Jul 30, 2018 by Dave Kleikamp Committed by Will Deacon Jul 30, 2018

arm64: kexec: machine_kexec should call __flush_icache_range



machine_kexec flushes the reboot_code_buffer from the icache
after stopping the other cpus.

Commit 3b8c9f1c ("arm64: IPI each CPU after invalidating the I-cache
for kernel mappings") added an IPI call to flush_icache_range, which
causes a hang here, so replace the call with __flush_icache_range

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent efd11235

arch/arm64/kernel/machine_kexec.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -184,7 +184,7 @@ void machine_kexec(struct kimage *kimage)

		/* Flush the reboot_code_buffer in preparation for its execution. */
		__flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size);
		flush_icache_range((uintptr_t)reboot_code_buffer,
		__flush_icache_range((uintptr_t)reboot_code_buffer,
		arm64_relocate_new_kernel_size);

		/* Flush the kimage list and its buffers. */

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