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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 22:13:10 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 22:13:10 +0300 |
| commit | 3591b19511ed88e2e82f64b7d7bf54a5f8d10363 (patch) | |
| tree | d08896f1aeb2083960bdc5e8537ab9e8d56bd43c /drivers/s390/char | |
| parent | 45f5532a2f65afeda9e8a02bf1aca15c2b4c9be8 (diff) | |
| parent | fcc082f35c6d565d351b5b89bb03a82333e9ffe8 (diff) | |
| download | linux-3591b19511ed88e2e82f64b7d7bf54a5f8d10363.tar.xz | |
Merge tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
- A copy of Arnds compat wrapper generation series
- Pass information about the KVM guest to the host in form the control
program code and the control program version code
- Map IOV resources to support PCI physical functions on s390
- Add vector load and store alignment hints to improve performance
- Use the "jdd" constraint with gcc 9 to make jump labels working again
- Remove amode workaround for old z/VM releases from the DCSS code
- Add support for in-kernel performance measurements using the CPU
measurement counter facility
- Introduce a new PMU device cpum_cf_diag to capture counters and store
thenn as event raw data.
- Bug fixes and cleanups
* tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
Revert "s390/cpum_cf: Add kernel message exaplanations"
s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y
s390/suspend: fix prefix register reset in swsusp_arch_resume
s390: warn about clearing als implied facilities
s390: allow overriding facilities via command line
s390: clean up redundant facilities list setup
s390/als: remove duplicated in-place implementation of stfle
s390/cio: Use cpa range elsewhere within vfio-ccw
s390/cio: Fix vfio-ccw handling of recursive TICs
s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem
s390/cpum_cf: Handle EBUSY return code from CPU counter facility reservation
s390/cpum_cf: Add kernel message exaplanations
s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace
s390/cpum_cf: add ctr_stcctm() function
s390/cpum_cf: move common functions into a separate file
s390/cpum_cf: introduce kernel_cpumcf_avail() function
s390/cpu_mf: replace stcctm5() with the stcctm() function
s390/cpu_mf: add store cpu counter multiple instruction support
s390/cpum_cf: Add minimal in-kernel interface for counter measurements
s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts
...
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp.h | 4 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index b3fcc24b1182..367e9d384d85 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -195,7 +195,9 @@ struct read_info_sccb { u16 hcpua; /* 120-121 */ u8 _pad_122[124 - 122]; /* 122-123 */ u32 hmfai; /* 124-127 */ - u8 _pad_128[4096 - 128]; /* 128-4095 */ + u8 _pad_128[134 - 128]; /* 128-133 */ + u8 byte_134; /* 134 */ + u8 _pad_135[4096 - 135]; /* 135-4095 */ } __packed __aligned(PAGE_SIZE); struct read_storage_sccb { diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index e792cee3b51c..8332788681c4 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -44,6 +44,8 @@ static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb) S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP; if (sccb->fac91 & 0x40) S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_GUEST; + if (sccb->cpuoff > 134) + sclp.has_diag318 = !!(sccb->byte_134 & 0x80); sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2; sclp.rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; sclp.rzm <<= 20; |