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Chen Yu authored
The following commit in 2013: 77ea8c94 ("x86: Reserve setup_data ranges late after parsing memmap cmdline") has fixed the issue of losing setup_data information by deferring the e820_reserve_setup_data() call until the early params have been parsed. But this also introduced a new problem that, during early params parsing, the kexec kernel might fake a mptable and saves it into the e820_table_firmware[] table (without saving the mptable to the e820_table[]), however the subsequent invoking of e820_reserve_setup_data() will overwrite the e820_table_firmware[] according to the e820_table[], thus the fake mptable information is lost. Fix this issue by updating the e820_table_firmware[] according to the setup_data information, but without overwriting it. Signed-off-by:
Chen Yu <yu.c.chen@intel.com> Cc: Dave Young <dyoung@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Xunlei Pang <xlpang@redhat.com> Cc: linux-kernel@vger.kernel.org Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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