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xen/mcelog: drop __MC_MSR_MCGCAP 

It has never been part of Xen's public interface, and there's therefore
no guarantee for MCG_CAP's value to always be present in array entry 0.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Jan Beulich 2019-11-11 15:45:42 +01:00 committed by Juergen Gross
parent fa6614d8ef
commit ca8ffdaea5
2 changed files with 7 additions and 3 deletions
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9
drivers/xen/mcelog.c
View File

@ -222,7 +222,7 @@ static int convert_log(struct mc_info *mi)
struct mcinfo_global *mc_global;
struct mcinfo_bank *mc_bank;
struct xen_mce m;
uint32_t i;
unsigned int i, j;
mic = NULL;
x86_mcinfo_lookup(&mic, mi, MC_TYPE_GLOBAL);
@ -248,7 +248,12 @@ static int convert_log(struct mc_info *mi)
m.socketid = g_physinfo[i].mc_chipid;
m.cpu = m.extcpu = g_physinfo[i].mc_cpunr;
m.cpuvendor = (__u8)g_physinfo[i].mc_vendor;
m.mcgcap = g_physinfo[i].mc_msrvalues[__MC_MSR_MCGCAP].value;
for (j = 0; j < g_physinfo[i].mc_nmsrvals; ++j)
switch (g_physinfo[i].mc_msrvalues[j].reg) {
case MSR_IA32_MCG_CAP:
m.mcgcap = g_physinfo[i].mc_msrvalues[j].value;
break;
}
mic = NULL;
x86_mcinfo_lookup(&mic, mi, MC_TYPE_BANK);

1
include/xen/interface/xen-mca.h
View File

@ -183,7 +183,6 @@ struct mc_info {
DEFINE_GUEST_HANDLE_STRUCT(mc_info);
#define __MC_MSR_ARRAYSIZE 8
#define __MC_MSR_MCGCAP 0
#define __MC_NMSRS 1
#define MC_NCAPS 7
struct mcinfo_logical_cpu {