summaryrefslogtreecommitdiff
path: root/drivers/s390
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 19:47:12 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 19:47:12 +0400
commitb05d59dfceaea72565b1648af929b037b0f96d7f (patch)
treebbe92714be468ed8783bce6ac2c305c0aedf8eb5 /drivers/s390
parentdaf342af2f7856fd2f5c66b9fb39a8f24986ca53 (diff)
parent820b3fcdeb80d30410f4427d2cbf9161c35fdeef (diff)
downloadlinux-b05d59dfceaea72565b1648af929b037b0f96d7f.tar.xz
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm into next
Pull KVM updates from Paolo Bonzini: "At over 200 commits, covering almost all supported architectures, this was a pretty active cycle for KVM. Changes include: - a lot of s390 changes: optimizations, support for migration, GDB support and more - ARM changes are pretty small: support for the PSCI 0.2 hypercall interface on both the guest and the host (the latter acked by Catalin) - initial POWER8 and little-endian host support - support for running u-boot on embedded POWER targets - pretty large changes to MIPS too, completing the userspace interface and improving the handling of virtualized timer hardware - for x86, a larger set of changes is scheduled for 3.17. Still, we have a few emulator bugfixes and support for running nested fully-virtualized Xen guests (para-virtualized Xen guests have always worked). And some optimizations too. The only missing architecture here is ia64. It's not a coincidence that support for KVM on ia64 is scheduled for removal in 3.17" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (203 commits) KVM: add missing cleanup_srcu_struct KVM: PPC: Book3S PR: Rework SLB switching code KVM: PPC: Book3S PR: Use SLB entry 0 KVM: PPC: Book3S HV: Fix machine check delivery to guest KVM: PPC: Book3S HV: Work around POWER8 performance monitor bugs KVM: PPC: Book3S HV: Make sure we don't miss dirty pages KVM: PPC: Book3S HV: Fix dirty map for hugepages KVM: PPC: Book3S HV: Put huge-page HPTEs in rmap chain for base address KVM: PPC: Book3S HV: Fix check for running inside guest in global_invalidates() KVM: PPC: Book3S: Move KVM_REG_PPC_WORT to an unused register number KVM: PPC: Book3S: Add ONE_REG register names that were missed KVM: PPC: Add CAP to indicate hcall fixes KVM: PPC: MPIC: Reset IRQ source private members KVM: PPC: Graciously fail broken LE hypercalls PPC: ePAPR: Fix hypercall on LE guest KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler KVM: PPC: BOOK3S: Always use the saved DAR value PPC: KVM: Make NX bit available with magic page KVM: PPC: Disable NX for old magic page using guests KVM: PPC: BOOK3S: HV: Add mixed page-size support for guest ...
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_early.c34
1 files changed, 32 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index 14196ea0fdf3..1918d9dff45d 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -22,11 +22,14 @@ struct read_info_sccb {
u8 rnsize; /* 10 */
u8 _reserved0[16 - 11]; /* 11-15 */
u16 ncpurl; /* 16-17 */
- u8 _reserved7[24 - 18]; /* 18-23 */
+ u16 cpuoff; /* 18-19 */
+ u8 _reserved7[24 - 20]; /* 20-23 */
u8 loadparm[8]; /* 24-31 */
u8 _reserved1[48 - 32]; /* 32-47 */
u64 facilities; /* 48-55 */
- u8 _reserved2[84 - 56]; /* 56-83 */
+ u8 _reserved2a[76 - 56]; /* 56-75 */
+ u32 ibc; /* 76-79 */
+ u8 _reserved2b[84 - 80]; /* 80-83 */
u8 fac84; /* 84 */
u8 fac85; /* 85 */
u8 _reserved3[91 - 86]; /* 86-90 */
@@ -45,6 +48,8 @@ static unsigned int sclp_con_has_linemode __initdata;
static unsigned long sclp_hsa_size;
static unsigned int sclp_max_cpu;
static struct sclp_ipl_info sclp_ipl_info;
+static unsigned char sclp_siif;
+static u32 sclp_ibc;
u64 sclp_facilities;
u8 sclp_fac84;
@@ -96,6 +101,9 @@ static int __init sclp_read_info_early(struct read_info_sccb *sccb)
static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
{
+ struct sclp_cpu_entry *cpue;
+ u16 boot_cpu_address, cpu;
+
if (sclp_read_info_early(sccb))
return;
@@ -106,6 +114,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp_rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
sclp_rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
sclp_rzm <<= 20;
+ sclp_ibc = sccb->ibc;
if (!sccb->hcpua) {
if (MACHINE_IS_VM)
@@ -116,6 +125,15 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp_max_cpu = sccb->hcpua + 1;
}
+ boot_cpu_address = stap();
+ cpue = (void *)sccb + sccb->cpuoff;
+ for (cpu = 0; cpu < sccb->ncpurl; cpue++, cpu++) {
+ if (boot_cpu_address != cpue->address)
+ continue;
+ sclp_siif = cpue->siif;
+ break;
+ }
+
/* Save IPL information */
sclp_ipl_info.is_valid = 1;
if (sccb->flags & 0x2)
@@ -148,6 +166,18 @@ unsigned int sclp_get_max_cpu(void)
return sclp_max_cpu;
}
+int sclp_has_siif(void)
+{
+ return sclp_siif;
+}
+EXPORT_SYMBOL(sclp_has_siif);
+
+unsigned int sclp_get_ibc(void)
+{
+ return sclp_ibc;
+}
+EXPORT_SYMBOL(sclp_get_ibc);
+
/*
* This function will be called after sclp_facilities_detect(), which gets
* called from early.c code. The sclp_facilities_detect() function retrieves