diff options
| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-03-11 06:55:49 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-03-11 06:55:49 -0300 |
| commit | c897df0e2dbc81bcc09c11425658d69830825364 (patch) | |
| tree | 04c268e4951f2b75acb6873307673e45d05a635e /arch/powerpc/mm/hash_utils_64.c | |
| parent | 1e9c4d49020996a645a535cbb8f1ff78b9b120f3 (diff) | |
| parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) | |
Merge tag 'v3.14-rc5' into patchwork
Linux 3.14-rc5
* tag 'v3.14-rc5': (1117 commits)
Linux 3.14-rc5
drm/vmwgfx: avoid null pointer dereference at failure paths
drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
drm/vmwgfx: Remove some unused surface formats
MAINTAINERS: add maintainer entry for Armada DRM driver
arm64: Fix !CONFIG_SMP kernel build
arm64: mm: Add double logical invert to pte accessors
dm cache: fix truncation bug when mapping I/O to >2TB fast device
perf tools: Fix strict alias issue for find_first_bit
powerpc/powernv: Fix indirect XSCOM unmangling
powerpc/powernv: Fix opal_xscom_{read,write} prototype
powerpc/powernv: Refactor PHB diag-data dump
powerpc/powernv: Dump PHB diag-data immediately
powerpc: Increase stack redzone for 64-bit userspace to 512 bytes
powerpc/ftrace: bugfix for test_24bit_addr
powerpc/crashdump : Fix page frame number check in copy_oldmem_page
powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly
kvm, vmx: Really fix lazy FPU on nested guest
perf tools: fix BFD detection on opensuse
drm/radeon: enable speaker allocation setup on dce3.2
...
Diffstat (limited to 'arch/powerpc/mm/hash_utils_64.c')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index de6881259aef..d766d6ee33fe 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -207,6 +207,20 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend, if (overlaps_kernel_text(vaddr, vaddr + step)) tprot &= ~HPTE_R_N; + /* + * If relocatable, check if it overlaps interrupt vectors that + * are copied down to real 0. For relocatable kernel + * (e.g. kdump case) we copy interrupt vectors down to real + * address 0. Mark that region as executable. This is + * because on p8 system with relocation on exception feature + * enabled, exceptions are raised with MMU (IR=DR=1) ON. Hence + * in order to execute the interrupt handlers in virtual + * mode the vector region need to be marked as executable. + */ + if ((PHYSICAL_START > MEMORY_START) && + overlaps_interrupt_vector_text(vaddr, vaddr + step)) + tprot &= ~HPTE_R_N; + hash = hpt_hash(vpn, shift, ssize); hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP); |