ARM: kexec: fix failure to boot crash kernel
When kexec was converted to DTB, the dtb address was passed between machine_kexec_prepare() and machine_kexec() using a static variable. This is bad news if you load a crash kernel followed by a normal kernel or vice versa - the last loaded kernel overwrites the dtb address. This can result in kexec failures, as (eg) we try to boot the crash kernel with the last loaded dtb. For example, with: the crash kernel fails to find the dtb. Avoid this by defining a kimage architecture structure, and store the address to be passed in r2 there, which will either be the ATAGs or the dtb blob. Fixes: 4cabd1d9 ("ARM: 7539/1: kexec: scan for dtb magic in segments") Fixes: 42d720d1 ("ARM: kexec: Make .text R/W in machine_kexec") Reported-by: NKeerthy <j-keerthy@ti.com> Tested-by: NKeerthy <j-keerthy@ti.com> Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Showing
想要评论请 注册 或 登录