wireguard-linux/arch/powerpc/kernel/early_32.c, branch jd/unified-crypt-queue

powerpc/fsl_booke/32: implement KASLR infrastructure

2019-11-13T08:27:40Z

This patch add support to boot kernel from places other than KERNELBASE. Since CONFIG_RELOCATABLE has already supported, what we need to do is map or copy kernel to a proper place and relocate. Freescale Book-E parts expect lowmem to be mapped by fixed TLB entries(TLB1). The TLB1 entries are not suitable to map the kernel directly in a randomized region, so we chose to copy the kernel to a proper place and restart to relocate. The offset of the kernel was not randomized yet(a fixed 64M is set). We will randomize it in the next patch. Signed-off-by: Jason Yan Tested-by: Diana Craciun Reviewed-by: Christophe Leroy Signed-off-by: Scott Wood [mpe: Use PTRRELOC() in early_init()] Signed-off-by: Michael Ellerman

powerpc/32: use memset() instead of memset_io() to zero BSS

2019-05-02T15:20:26Z

Since commit 400c47d81ca38 ("powerpc32: memset: only use dcbz once cache is enabled"), memset() can be used before activation of the cache, so no need to use memset_io() for zeroing the BSS. Acked-by: Dmitry Vyukov Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/32: Move early_init() in a separate file

2019-05-02T15:20:25Z

In preparation of KASAN, move early_init() into a separate file in order to allow deactivation of KASAN for that function. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman