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linux/arch/powerpc/kvm
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Laurent Dufour 02a68d0503 powerpc/kvm/cma: Fix panic introduces by signed shift operation 
fc95ca7284 introduces a memset in
kvmppc_alloc_hpt since the general CMA doesn't clear the memory it
allocates.

However, the size argument passed to memset is computed from a signed value
and its signed bit is extended by the cast the compiler is doing. This lead
to extremely large size value when dealing with order value >= 31, and
almost all the memory following the allocated space is cleaned. As a
consequence, the system is panicing and may even fail spawning the kdump
kernel.

This fix makes use of an unsigned value for the memset's size argument to
avoid sign extension. Among this fix, another shift operation which may
lead to signed extended value too is also fixed.

Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-03 10:34:07 +02:00
..
book3s_32_mmu_host.c KVM: PPC: Book3S: Make magic page properly 4k mappable 2014-07-28 15:23:11 +02:00
book3s_32_mmu.c KVM: PPC: Book3S: Stop PTE lookup on write errors 2014-07-28 15:23:10 +02:00
book3s_32_sr.S KVM: PPC: book3s_pr: Simplify transitions between virtual and real mode 2011-09-25 19:52:29 +03:00
book3s_64_mmu_host.c KVM: PPC: Book3S: Make magic page properly 4k mappable 2014-07-28 15:23:11 +02:00
book3s_64_mmu_hv.c powerpc/kvm/cma: Fix panic introduces by signed shift operation 2014-09-03 10:34:07 +02:00
book3s_64_mmu.c KVM: PPC: Disable NX for old magic page using guests 2014-05-30 14:26:24 +02:00
book3s_64_slb.S KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE 2014-03-26 23:34:27 +11:00
book3s_64_vio.c ppc: kvm: use anon_inode_getfd() with O_CLOEXEC flag 2013-08-26 13:19:56 +03:00
book3s_emulate.c KVM: PPC: PR: Handle FSCR feature deselects 2014-07-31 10:23:46 +02:00
book3s_exports.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_hv_builtin.c PC, KVM, CMA: Fix regression caused by wrong get_order() use 2014-08-19 15:11:57 +02:00
book3s_hv_interrupts.S powerpc/kvm: Remove redundant save of SIER AND MMCR2 2014-07-11 12:55:07 +10:00
book3s_hv_ras.c KVM: PPC: Book3S HV: Access guest VPA in BE 2014-07-28 15:22:22 +02:00
book3s_hv_rm_mmu.c Patch queue for ppc - 2014-08-01 2014-08-05 09:58:11 +02:00
book3s_hv_rm_xics.c KVM: PPC: Enable IRQFD support for the XICS interrupt controller 2014-08-05 14:26:33 +02:00
book3s_hv_rmhandlers.S Here are the PPC and ARM changes for KVM, which I separated because 2014-08-07 11:35:30 -07:00
book3s_hv.c KVM: PPC: BOOK3S: HV: Update compute_tlbie_rb to handle 16MB base page 2014-07-28 16:09:17 +02:00
book3s_interrupts.S KVM: PPC: Book3S PR: Fix ABIv2 on LE 2014-07-28 15:22:15 +02:00
book3s_mmu_hpte.c kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header 2013-10-17 15:36:22 +02:00
book3s_paired_singles.c KVM: PPC: Allow kvmppc_get_last_inst() to fail 2014-07-28 15:23:14 +02:00
book3s_pr_papr.c KVM: PPC: Book3S PR: Take SRCU read lock around RTAS kvm_read_guest() call 2014-07-28 15:23:16 +02:00
book3s_pr.c KVM: PPC: PR: Handle FSCR feature deselects 2014-07-31 10:23:46 +02:00
book3s_rmhandlers.S KVM: PPC: Book3S PR: Fix ABIv2 on LE 2014-07-28 15:22:15 +02:00
book3s_rtas.c KVM: PPC: RTAS: Do byte swaps explicitly 2014-07-07 23:17:20 +02:00
book3s_segment.S KVM: PPC: Book3S PR: Handle Facility interrupt and FSCR 2014-05-30 14:26:22 +02:00
book3s_xics.c KVM: PPC: Enable IRQFD support for the XICS interrupt controller 2014-08-05 14:26:33 +02:00
book3s_xics.h KVM: PPC: Enable IRQFD support for the XICS interrupt controller 2014-08-05 14:26:33 +02:00
book3s.c KVM: PPC: Expose helper functions for data/inst faults 2014-07-28 18:30:18 +02:00
book3s.h kvm: powerpc: book3s: Allow the HV and PR selection per virtual machine 2013-10-17 18:42:36 +02:00
booke_emulate.c kvm: ppc: booke: Use the shared struct helpers for SPRN_SPRG0-7 2014-07-28 15:23:12 +02:00
booke_interrupts.S KVM: PPC: Remove 440 support 2014-07-28 15:23:15 +02:00
booke.c KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
booke.h KVM: PPC: Remove 440 support 2014-07-28 15:23:15 +02:00
bookehv_interrupts.S KVM: PPC: Remove 440 support 2014-07-28 15:23:15 +02:00
e500_emulate.c KVM: PPC: e500: Emulate power management control SPR 2014-07-28 15:22:27 +02:00
e500_mmu_host.c Patch queue for ppc - 2014-08-01 2014-08-05 09:58:11 +02:00
e500_mmu_host.h KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static 2013-01-24 19:23:33 +01:00
e500_mmu.c KVM: PPC: e500: Fix bad address type in deliver_tlb_misss() 2014-01-27 16:00:54 +01:00
e500.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
e500.h kvm: powerpc: use caching attributes as per linux pte 2014-01-09 10:15:08 +01:00
e500mc.c KVM: PPC: Booke-hv: Add one reg interface for SPRG9 2014-07-28 15:23:15 +02:00
emulate_loadstore.c KVM: PPC: Separate loadstore emulation from priv emulation 2014-07-28 18:30:10 +02:00
emulate.c KVM: PPC: Separate loadstore emulation from priv emulation 2014-07-28 18:30:10 +02:00
fpu.S powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} 2010-09-02 14:07:32 +10:00
irq.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
Kconfig KVM: PPC: Enable IRQFD support for the XICS interrupt controller 2014-08-05 14:26:33 +02:00
Makefile Here are the PPC and ARM changes for KVM, which I separated because 2014-08-07 11:35:30 -07:00
mpic.c KVM: irqchip: Provide and use accessors for irq routing table 2014-08-05 14:26:16 +02:00
powerpc.c KVM: PPC: drop duplicate tracepoint 2014-08-05 14:23:41 +02:00
timing.c KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
timing.h KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
trace_booke.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00
trace_pr.h KVM: PPC: drop duplicate tracepoint 2014-08-05 14:23:41 +02:00
trace.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00