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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2016-08-19 14:22:37 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2016-09-23 07:54:17 +1000
commitfe036a0605d60d6c81ffdcd6241e9ae0013fe235 (patch)
treee4bd3548c3454415fd22cc0b243d4dfd452712ac /arch/powerpc/kernel/machine_kexec_64.c
parentfc48bad53142c991a5280940fd7ee8d226697b2c (diff)
downloadlinux-fe036a0605d60d6c81ffdcd6241e9ae0013fe235.tar.gz
powerpc/64/kexec: Fix MMU cleanup on radix
Just using the hash ops won't work anymore since radix will have NULL in there. Instead create an mmu_cleanup_all() function which will do the right thing based on the MMU mode. For Radix, for now I clear UPRT and the PTCR, effectively switching back to Radix with no partition table setup. Currently set it to NULL on BookE thought it might be a good idea to wipe the TLB there (Scott ?) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_64.c')
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index 4c780a342282..7a7793211ae7 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -55,9 +55,6 @@ int default_machine_kexec_prepare(struct kimage *image)
const unsigned long *basep;
const unsigned int *sizep;
- if (!mmu_hash_ops.hpte_clear_all)
- return -ENOENT;
-
/*
* Since we use the kernel fault handlers and paging code to
* handle the virtual mode, we must make sure no destination
@@ -379,13 +376,8 @@ void default_machine_kexec(struct kimage *image)
* a toc is easier in C, so pass in what we can.
*/
kexec_sequence(&kexec_stack, image->start, image,
- page_address(image->control_code_page),
-#ifdef CONFIG_PPC_STD_MMU
- mmu_hash_ops.hpte_clear_all
-#else
- NULL
-#endif
- );
+ page_address(image->control_code_page),
+ mmu_cleanup_all);
/* NOTREACHED */
}