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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-10-11 14:34:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-10-11 14:34:18 -0700 |
| commit | d947d6848a790616d6d2ca64097b6e818ffe3017 (patch) | |
| tree | 136c1263f3c0794794dbb1332de9f5aa0280de14 /arch | |
| parent | 9e4c6c1ad9a195f28ec3d3d5054e25f6bdde87bd (diff) | |
| parent | bf56c410162dbf2e27906acbdcd904cbbfdba302 (diff) | |
Merge tag 'for-linus-6.12a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"A fix for topology information of Xen PV guests"
* tag 'for-linus-6.12a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: mark boot CPU of PV guest in MSR_IA32_APICBASE
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 2c12ae42dc8b..d6818c6cafda 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1032,6 +1032,10 @@ static u64 xen_do_read_msr(unsigned int msr, int *err) switch (msr) { case MSR_IA32_APICBASE: val &= ~X2APIC_ENABLE; + if (smp_processor_id() == 0) + val |= MSR_IA32_APICBASE_BSP; + else + val &= ~MSR_IA32_APICBASE_BSP; break; } return val; |