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88aeca15d6
linux/arch/s390
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Michael Holzheu 88aeca15d6 s390/bpf: fix bpf frame pointer setup 
Currently the bpf frame pointer is set to the old r15. This is
wrong because of packed stack. Fix this and adjust the frame pointer
to respect packed stack. This now generates a prolog like the following:

 3ff8001c3fa: eb67f0480024   stmg    %r6,%r7,72(%r15)
 3ff8001c400: ebcff0780024   stmg    %r12,%r15,120(%r15)
 3ff8001c406: b904001f       lgr     %r1,%r15      <- load backchain
 3ff8001c40a: 41d0f048       la      %r13,72(%r15) <- load adjusted bfp
 3ff8001c40e: a7fbfd98       aghi    %r15,-616
 3ff8001c412: e310f0980024   stg     %r1,152(%r15) <- save backchain

Fixes: 0546231057 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-03 19:31:39 -07:00
..
appldata s390: appldata: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
boot s390: remove "64" suffix from a couple of files 2015-03-25 11:49:34 +01:00
configs s390: update default configuration 2015-01-22 12:16:09 +01:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-05-22 14:26:36 -07:00
hypfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
include s390/mm: correct return value of pmd_pfn 2015-05-19 10:35:09 +02:00
kernel Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
kvm This mostly includes the PPC changes for 4.1, which this time cover 2015-04-26 13:06:22 -07:00
lib s390: remove "64" suffix from mem64.S and swsusp_asm64.S 2015-03-25 11:49:51 +01:00
mm s390/mm: change swap pte encoding and pgtable cleanup 2015-04-23 16:56:20 +02:00
net s390/bpf: fix bpf frame pointer setup 2015-06-03 19:31:39 -07:00
oprofile s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-04-20 10:15:33 -07:00
defconfig s390: update default configuration 2015-01-22 12:16:09 +01:00
Kbuild s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
Kconfig s390/bpf: add dependency to z196 features 2015-04-23 16:55:50 +02:00
Kconfig.debug
Makefile s390: remove 31 bit support 2015-03-25 11:49:33 +01:00