tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[XTENSA] Move common sections into bss sections
Move the fields of the COMMON sections 'swapper_pg_dir' and
'empty_zero_page' to the BSS section. Remove the unused COMMON
sections 'emtpy_bad_page_table' and 'empty_bad_page'.
Signed-off-by: Chris Zankel <chris@zankel.net>
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arch/xtensa/kernel/head.S
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arch/xtensa/kernel/head.S
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#include <asm/page.h>
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#include <asm/cacheasm.h>
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#include <linux/linkage.h>
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/*
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* This module contains the entry code for kernel images. It performs the
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* minimal setup needed to call the generic C routines.
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should_never_return:
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j should_never_return
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/* Define some common data structures here. We define them
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* here in this assembly file due to their unusual alignment
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* requirements.
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*/
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.comm swapper_pg_dir,PAGE_SIZE,PAGE_SIZE
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.comm empty_bad_page_table,PAGE_SIZE,PAGE_SIZE
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.comm empty_bad_page,PAGE_SIZE,PAGE_SIZE
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.comm empty_zero_page,PAGE_SIZE,PAGE_SIZE
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/*
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* BSS section
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*/
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.section ".bss.page_aligned", "w"
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ENTRY(swapper_pg_dir)
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.fill PAGE_SIZE, 1, 0
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ENTRY(empty_zero_page)
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.fill PAGE_SIZE, 1, 0
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