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openSUSE:Maintenance:8484
xen.openSUSE_Leap_42.3_Update
x86-XPTI-no-idle-dom.patch
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File x86-XPTI-no-idle-dom.patch of Package xen.openSUSE_Leap_42.3_Update
x86: don't enable XPTI on idle domain While the involved code (in pv_domain_initialise()) sits behind an !is_idle_domain() check already, we need to add one here. Signed-off-by: Jan Beulich <jbeulich@suse.com> --- The further backport to 4.8 and older is going to look quite a bit different; a one-liner looks to suffice there. --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -714,20 +714,15 @@ int arch_domain_create(struct domain *d, if ( (rc = hvm_domain_initialise(d)) != 0 ) goto fail; } - else + else if ( !is_idle_domain(d) ) { static const struct arch_csw pv_csw = { .from = paravirt_ctxt_switch_from, .to = paravirt_ctxt_switch_to, .tail = continue_nonidle_domain, }; - static const struct arch_csw idle_csw = { - .from = paravirt_ctxt_switch_from, - .to = paravirt_ctxt_switch_to, - .tail = continue_idle_domain, - }; - d->arch.ctxt_switch = is_idle_domain(d) ? &idle_csw : &pv_csw; + d->arch.ctxt_switch = &pv_csw; /* 64-bit PV guest by default. */ d->arch.is_32bit_pv = d->arch.has_32bit_shinfo = 0; @@ -758,6 +753,16 @@ int arch_domain_create(struct domain *d, break; } } + else + { + static const struct arch_csw idle_csw = { + .from = paravirt_ctxt_switch_from, + .to = paravirt_ctxt_switch_to, + .tail = continue_idle_domain, + }; + + d->arch.ctxt_switch = &idle_csw; + } /* initialize default tsc behavior in case tools don't */ tsc_set_info(d, TSC_MODE_DEFAULT, 0UL, 0, 0);
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