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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-16 14:01:03 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-16 14:01:03 -0500 |
commit | 497a5df7bf6ffd136ae21c49d1a01292930d7ca2 (patch) | |
tree | 774215d43cdc9fbd8660086d1801400163dcbd52 /arch/x86/xen/enlighten.c | |
parent | 714d8e7e27197dd39b2550e762a6a6fcf397a471 (diff) | |
parent | 0b97b03d88b40bfbd7ff0e069186a137d9786d43 (diff) | |
download | linux-stable-497a5df7bf6ffd136ae21c49d1a01292930d7ca2.tar.gz linux-stable-497a5df7bf6ffd136ae21c49d1a01292930d7ca2.tar.bz2 linux-stable-497a5df7bf6ffd136ae21c49d1a01292930d7ca2.zip |
Merge tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen features and fixes from David Vrabel:
- use a single source list of hypercalls, generating other tables etc.
at build time.
- add a "Xen PV" APIC driver to support >255 VCPUs in PV guests.
- significant performance improve to guest save/restore/migration.
- scsiback/front save/restore support.
- infrastructure for multi-page xenbus rings.
- misc fixes.
* tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/pci: Try harder to get PXM information for Xen
xenbus_client: Extend interface to support multi-page ring
xen-pciback: also support disabling of bus-mastering and memory-write-invalidate
xen: support suspend/resume in pvscsi frontend
xen: scsiback: add LUN of restored domain
xen-scsiback: define a pr_fmt macro with xen-pvscsi
xen/mce: fix up xen_late_init_mcelog() error handling
xen/privcmd: improve performance of MMAPBATCH_V2
xen: unify foreign GFN map/unmap for auto-xlated physmap guests
x86/xen/apic: WARN with details.
x86/xen: Provide a "Xen PV" APIC driver to support >255 VCPUs
xen/pciback: Don't print scary messages when unsupported by hypervisor.
xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
xen: use generated hypervisor symbols in arch/x86/xen/trace.c
xen: synchronize include/xen/interface/xen.h with xen
xen: build infrastructure for generating hypercall depending symbols
xen: balloon: Use static attribute groups for sysfs entries
xen: pcpu: Use static attribute groups for sysfs entry
Diffstat (limited to 'arch/x86/xen/enlighten.c')
-rw-r--r-- | arch/x86/xen/enlighten.c | 90 |
1 files changed, 1 insertions, 89 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 81665c9f2132..94578efd3067 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -928,92 +928,6 @@ static void xen_io_delay(void) { } -#ifdef CONFIG_X86_LOCAL_APIC -static unsigned long xen_set_apic_id(unsigned int x) -{ - WARN_ON(1); - return x; -} -static unsigned int xen_get_apic_id(unsigned long x) -{ - return ((x)>>24) & 0xFFu; -} -static u32 xen_apic_read(u32 reg) -{ - struct xen_platform_op op = { - .cmd = XENPF_get_cpuinfo, - .interface_version = XENPF_INTERFACE_VERSION, - .u.pcpu_info.xen_cpuid = 0, - }; - int ret = 0; - - /* Shouldn't need this as APIC is turned off for PV, and we only - * get called on the bootup processor. But just in case. */ - if (!xen_initial_domain() || smp_processor_id()) - return 0; - - if (reg == APIC_LVR) - return 0x10; - - if (reg != APIC_ID) - return 0; - - ret = HYPERVISOR_dom0_op(&op); - if (ret) - return 0; - - return op.u.pcpu_info.apic_id << 24; -} - -static void xen_apic_write(u32 reg, u32 val) -{ - /* Warn to see if there's any stray references */ - WARN_ON(1); -} - -static u64 xen_apic_icr_read(void) -{ - return 0; -} - -static void xen_apic_icr_write(u32 low, u32 id) -{ - /* Warn to see if there's any stray references */ - WARN_ON(1); -} - -static void xen_apic_wait_icr_idle(void) -{ - return; -} - -static u32 xen_safe_apic_wait_icr_idle(void) -{ - return 0; -} - -static void set_xen_basic_apic_ops(void) -{ - apic->read = xen_apic_read; - apic->write = xen_apic_write; - apic->icr_read = xen_apic_icr_read; - apic->icr_write = xen_apic_icr_write; - apic->wait_icr_idle = xen_apic_wait_icr_idle; - apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; - apic->set_apic_id = xen_set_apic_id; - apic->get_apic_id = xen_get_apic_id; - -#ifdef CONFIG_SMP - apic->send_IPI_allbutself = xen_send_IPI_allbutself; - apic->send_IPI_mask_allbutself = xen_send_IPI_mask_allbutself; - apic->send_IPI_mask = xen_send_IPI_mask; - apic->send_IPI_all = xen_send_IPI_all; - apic->send_IPI_self = xen_send_IPI_self; -#endif -} - -#endif - static void xen_clts(void) { struct multicall_space mcs; @@ -1619,7 +1533,7 @@ asmlinkage __visible void __init xen_start_kernel(void) /* * set up the basic apic ops. */ - set_xen_basic_apic_ops(); + xen_init_apic(); #endif if (xen_feature(XENFEAT_mmu_pt_update_preserve_ad)) { @@ -1732,8 +1646,6 @@ asmlinkage __visible void __init xen_start_kernel(void) if (HYPERVISOR_dom0_op(&op) == 0) boot_params.kbd_status = op.u.firmware_info.u.kbd_shift_flags; - xen_init_apic(); - /* Make sure ACS will be enabled */ pci_request_acs(); |