[S390] kvm-s390: fix stfle facilities numbers >=64

Currently KVM masks out the known good facilities only for the first
double word, but passed the 2nd double word without filtering. This
breaks some code on newer systems:

[    0.593966] ------------[ cut here ]------------
[    0.594086] WARNING: at arch/s390/oprofile/hwsampler.c:696
[    0.594213] Modules linked in:
[    0.594321] Modules linked in:
[    0.594439] CPU: 0 Not tainted 3.0.0-rc1 #46
[    0.594564] Process swapper (pid: 1, task: 00000001effa8038, ksp: 00000001effafab8)
[    0.594735] Krnl PSW : 0704100180000000 00000000004ab89a (hwsampler_setup+0x75a/0x7b8)
[    0.594910]            R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3
[    0.595120] Krnl GPRS: ffffffff00000000 00000000ffffffea ffffffffffffffea 00000000004a98f8
[    0.595351]            00000000004aa002 0000000000000001 000000000080e720 000000000088b9f8
[    0.595522]            000000000080d3e8 0000000000000000 0000000000000000 000000000080e464
[    0.595725]            0000000000000000 00000000005db198 00000000004ab3a2 00000001effafd98
[    0.595901] Krnl Code: 00000000004ab88c: c0e5000673ca        brasl   %r14,57a020
[    0.596071]            00000000004ab892: a7f4fc77            brc     15,4ab180
[    0.596276]            00000000004ab896: a7f40001            brc     15,4ab898
[    0.596454]           >00000000004ab89a: a7c8ffa1            lhi     %r12,-95
[    0.596657]            00000000004ab89e: a7f4fc71            brc     15,4ab180
[    0.596854]            00000000004ab8a2: a7f40001            brc     15,4ab8a4
[    0.597029]            00000000004ab8a6: a7f4ff22            brc     15,4ab6ea
[    0.597230]            00000000004ab8aa: c0200011009a        larl    %r2,6cb9de
[    0.597441] Call Trace:
[    0.597511] ([<00000000004ab3a2>] hwsampler_setup+0x262/0x7b8)
[    0.597676]  [<0000000000875812>] oprofile_arch_init+0x32/0xd0
[    0.597834]  [<0000000000875788>] oprofile_init+0x28/0x74
[    0.597991]  [<00000000001001be>] do_one_initcall+0x3a/0x170
[    0.598151]  [<000000000084fa22>] kernel_init+0x142/0x1ec
[    0.598314]  [<000000000057db16>] kernel_thread_starter+0x6/0xc
[    0.598468]  [<000000000057db10>] kernel_thread_starter+0x0/0xc
[    0.598606] Last Breaking-Event-Address:
[    0.598707]  [<00000000004ab896>] hwsampler_setup+0x756/0x7b8
[    0.598863] ---[ end trace ce3179037f4e3e5b ]---

So lets also mask the 2nd double word. Facilites 66,76,76,77 should be fine.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 30ca85c..67345ae 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -731,6 +731,7 @@ static int __init kvm_s390_init(void)
        }
        memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
        facilities[0] &= 0xff00fff3f47c0000ULL;
+       facilities[1] &= 0x201c000000000000ULL;
        return 0;
 }