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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2018-08-01 16:32:25 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-08-02 14:22:22 +0200 |
| commit | 1b3a62643660020cdc68e6139a010c06e8fc96c7 (patch) | |
| tree | 2396dad62af3c907ef91afe6daac36a64e5609fd /arch/x86/include/asm/irqflags.h | |
| parent | 6b4703768268d09ac928c64474fd686adf4574f9 (diff) | |
| download | linux-0-day-1b3a62643660020cdc68e6139a010c06e8fc96c7.tar.gz linux-0-day-1b3a62643660020cdc68e6139a010c06e8fc96c7.tar.xz | |
x86/boot/compressed/64: Validate trampoline placement against E820
There were two report of boot failure cased by trampoline placed into
a reserved memory region. It can happen on machines that don't report
EBDA correctly.
Fix the problem by re-validating the found address against the E820 table.
If the address is in a reserved area, find the next usable region below the
initial address.
Fixes: 3548e131ec6a ("x86/boot/compressed/64: Find a place for 32-bit trampoline")
Reported-by: Dmitry Malkin <d.malkin@real-time-systems.com>
Reported-by: youling 257 <youling257@gmail.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180801133225.38121-1-kirill.shutemov@linux.intel.com
Diffstat (limited to 'arch/x86/include/asm/irqflags.h')
0 files changed, 0 insertions, 0 deletions