Re: [PATCH 11/11] powerpc/microwatt: Disable interrupts in boot wrapper main program
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2021-06-15 01:22:05
Excerpts from Paul Mackerras's message of June 15, 2021 9:05 am:
This ensures that we don't get a decrementer interrupt arriving before we have set up a handler for it.
Would this be better off merged in the previous patch (maybe with comment)? Why don't other platform_init()s seem to require this? Thanks, Nick
quoted hunk ↗ jump to hunk
Signed-off-by: Paul Mackerras <redacted> --- arch/powerpc/boot/microwatt.c | 1 + 1 file changed, 1 insertion(+)diff --git a/arch/powerpc/boot/microwatt.c b/arch/powerpc/boot/microwatt.c index ac922dd0aa4d..86a07bceaadf 100644 --- a/arch/powerpc/boot/microwatt.c +++ b/arch/powerpc/boot/microwatt.c@@ -12,6 +12,7 @@ void platform_init(unsigned long r3, unsigned long r4, unsigned long r5) { unsigned long heapsize = 16*1024*1024 - (unsigned long)_end; + __asm__ volatile("mtmsrd %0,1" : : "r" (0)); simple_alloc_init(_end, heapsize, 32, 64); fdt_init(_dtb_start); serial_console_init();-- 2.31.1