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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-06-28 12:57:47 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-06-28 12:57:47 +0200 |
| commit | 9e293b5a7062981016ace93160c56a980fcb73b8 (patch) | |
| tree | 69f557de9c1a1c2deaa28bdc42f8228a33247116 /arch/s390/kernel/entry.S | |
| parent | s390/dasd: Fix faulty ENODEV for RO sysfs attribute (diff) | |
| parent | KVM: s390: Backup the guest's machine check info (diff) | |
| download | linux-dev-9e293b5a7062981016ace93160c56a980fcb73b8.tar.xz linux-dev-9e293b5a7062981016ace93160c56a980fcb73b8.zip | |
Merge tag 'nmiforkvm' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into features
Pull kvm patches from Christian Borntraeger:
"s390,kvm: provide plumbing for machines checks when running guests"
This provides the basic plumbing for handling machine checks when
running guests
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index e83aff630bcf..21900e1cee9c 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -225,6 +225,7 @@ ENTRY(sie64a) jnz .Lsie_skip TSTMSK __LC_CPU_FLAGS,_CIF_FPU jo .Lsie_skip # exit if fp/vx regs changed +.Lsie_entry: sie 0(%r14) .Lsie_skip: ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE @@ -1122,7 +1123,13 @@ cleanup_critical: .quad .Lsie_done .Lcleanup_sie: - lg %r9,__SF_EMPTY(%r15) # get control block pointer + cghi %r11,__LC_SAVE_AREA_ASYNC #Is this in normal interrupt? + je 1f + slg %r9,BASED(.Lsie_crit_mcck_start) + clg %r9,BASED(.Lsie_crit_mcck_length) + jh 1f + oi __LC_CPU_FLAGS+7, _CIF_MCCK_GUEST +1: lg %r9,__SF_EMPTY(%r15) # get control block pointer ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE lctlg %c1,%c1,__LC_USER_ASCE # load primary asce larl %r9,sie_exit # skip forward to sie_exit @@ -1307,6 +1314,10 @@ cleanup_critical: .quad .Lsie_gmap .Lsie_critical_length: .quad .Lsie_done - .Lsie_gmap +.Lsie_crit_mcck_start: + .quad .Lsie_entry +.Lsie_crit_mcck_length: + .quad .Lsie_skip - .Lsie_entry #endif .section .rodata, "a" |