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9b912485e0
Introduce two new functions: parse_gb_huge_pages() and process_gb_huge_pages(), which handle a conflict between KASLR and huge pages of 1GB. These two functions will be used in the next patch: - parse_gb_huge_pages() is used to parse kernel command-line to get how many 1GB huge pages have been specified. A static global variable 'max_gb_huge_pages' is added to store the number. - process_gb_huge_pages() is used to skip as many 1GB huge pages as possible from the passed in memory region according to the specified number. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: douly.fnst@cn.fujitsu.com Cc: fanc.fnst@cn.fujitsu.com Cc: indou.takao@jp.fujitsu.com Cc: keescook@chromium.org Cc: lcapitulino@redhat.com Cc: yasu.isimatu@gmail.com Link: http://lkml.kernel.org/r/20180625031656.12443-2-bhe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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