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powerpc/prom_init: Move __prombss to it's own section and store it in .bss

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This makes __prombss its own section, and for now store
it in .bss.

This will give us the ability later to store it elsewhere
and/or free it after boot (it's about 8KB).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2018-10-15 13:49:58 +11:00 committed by Michael Ellerman
parent 8ca2d5151e
commit 5f69e38885
2 changed files with 4 additions and 1 deletions
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2
arch/powerpc/kernel/prom_init.c
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@ -48,7 +48,7 @@
#include <linux/linux_logo.h> #include <linux/linux_logo.h>
/* All of prom_init bss lives here */ /* All of prom_init bss lives here */
#define __prombss __initdata #define __prombss __section(.bss.prominit)
/* /*
* Eventually bump that one up * Eventually bump that one up

3
arch/powerpc/kernel/vmlinux.lds.S
View File

@ -4,6 +4,9 @@
#else #else
#define PROVIDE32(x) PROVIDE(x) #define PROVIDE32(x) PROVIDE(x)
#endif #endif
#define BSS_FIRST_SECTIONS *(.bss.prominit)
#include <asm/page.h> #include <asm/page.h>
#include <asm-generic/vmlinux.lds.h> #include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h> #include <asm/cache.h>