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s390/setup: diag 318: refactor struct

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The diag 318 struct introduced in include/asm/diag.h can be
reused in KVM, so let's condense the version code fields in the
diag318_info struct for easier usage and simplify it until we
can determine how the data should be formatted.

Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20200622154636.5499-2-walling@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Collin Walling 2020-06-22 11:46:35 -04:00 committed by Christian Borntraeger
parent b3a9e3b962
commit a23816f3cd
2 changed files with 3 additions and 6 deletions
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6
arch/s390/include/asm/diag.h
View File

@ -298,10 +298,8 @@ struct diag26c_mac_resp {
union diag318_info {
unsigned long val;
struct {
unsigned int cpnc : 8;
unsigned int cpvc_linux : 24;
unsigned char cpvc_distro[3];
unsigned char zero;
unsigned long cpnc : 8;
unsigned long cpvc : 56;
};
};

3
arch/s390/kernel/setup.c
View File

@ -1021,8 +1021,7 @@ static void __init setup_control_program_code(void)
{
union diag318_info diag318_info = {
.cpnc = CPNC_LINUX,
.cpvc_linux = 0,
.cpvc_distro = {0},
.cpvc = 0,
};
if (!sclp.has_diag318)