From: kbuild test robot <lkp@intel.com>
To: KarimAllah Ahmed <karahmed@amazon.de>
Cc: kbuild-all@01.org, x86@kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, hpa@zytor.com, jmattson@google.com,
mingo@redhat.com, pbonzini@redhat.com, rkrcmar@redhat.com,
tglx@linutronix.de, KarimAllah Ahmed <karahmed@amazon.de>
Subject: Re: [PATCH 04/10] KVM: Introduce a new guest mapping API
Date: Fri, 23 Feb 2018 09:27:39 +0800 [thread overview]
Message-ID: <201802230931.9J0I3EFj%fengguang.wu@intel.com> (raw)
In-Reply-To: <1519235241-6500-5-git-send-email-karahmed@amazon.de>
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Hi KarimAllah,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on tip/auto-latest]
[also build test ERROR on v4.16-rc2 next-20180222]
[cannot apply to kvm/linux-next]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/KarimAllah-Ahmed/KVM-X86-Handle-guest-memory-that-does-not-have-a-struct-page/20180223-064826
config: x86_64-randconfig-x012-201807 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All error/warnings (new ones prefixed by >>):
In file included from include/linux/linkage.h:7:0,
from include/linux/preempt.h:10,
from include/linux/hardirq.h:5,
from include/linux/kvm_host.h:10,
from arch/x86/kvm/../../../virt/kvm/kvm_main.c:21:
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:1669:19: error: 'kvm_vcpu_gfn_to_kaddr' undeclared here (not in a function); did you mean 'kvm_vcpu_gfn_to_page'?
EXPORT_SYMBOL_GPL(kvm_vcpu_gfn_to_kaddr);
^
include/linux/export.h:65:16: note: in definition of macro '___EXPORT_SYMBOL'
extern typeof(sym) sym; \
^~~
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:1669:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
EXPORT_SYMBOL_GPL(kvm_vcpu_gfn_to_kaddr);
^~~~~~~~~~~~~~~~~
vim +1669 arch/x86/kvm/../../../virt/kvm/kvm_main.c
1634
1635 bool kvm_vcpu_map(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map)
1636 {
1637 kvm_pfn_t pfn;
1638 void *kaddr = NULL;
1639 struct page *page = NULL;
1640
1641 if (map->kaddr && map->gfn == gfn)
1642 /* If the mapping is valid and guest memory is already mapped */
1643 return true;
1644 else if (map->kaddr)
1645 /* If the mapping is valid but trying to map a different guest pfn */
1646 kvm_vcpu_unmap(map);
1647
1648 pfn = kvm_vcpu_gfn_to_pfn(vcpu, gfn);
1649 if (is_error_pfn(pfn))
1650 return false;
1651
1652 if (pfn_valid(pfn)) {
1653 page = pfn_to_page(pfn);
1654 kaddr = vmap(&page, 1, VM_MAP, PAGE_KERNEL);
1655 } else {
1656 kaddr = memremap(pfn_to_hpa(pfn), PAGE_SIZE, MEMREMAP_WB);
1657 }
1658
1659 if (!kaddr)
1660 return false;
1661
1662 map->page = page;
1663 map->kaddr = kaddr;
1664 map->pfn = pfn;
1665 map->gfn = gfn;
1666
1667 return true;
1668 }
> 1669 EXPORT_SYMBOL_GPL(kvm_vcpu_gfn_to_kaddr);
1670
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2018-02-23 1:28 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-21 17:47 [PATCH 00/10] KVM/X86: Handle guest memory that does not have a struct page KarimAllah Ahmed
2018-02-21 17:47 ` [PATCH 01/10] X86/nVMX: handle_vmon: Read 4 bytes from guest memory instead of map->read->unmap sequence KarimAllah Ahmed
2018-02-21 17:47 ` [PATCH 02/10] X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory instead of map->copy->unmap sequence KarimAllah Ahmed
2018-02-21 17:47 ` [PATCH 03/10] X86/nVMX: Update the PML table without mapping and unmapping the page KarimAllah Ahmed
2018-02-23 2:02 ` kbuild test robot
2018-04-12 15:03 ` Paolo Bonzini
2018-02-21 17:47 ` [PATCH 04/10] KVM: Introduce a new guest mapping API KarimAllah Ahmed
2018-02-23 1:27 ` kbuild test robot [this message]
2018-02-23 1:37 ` kbuild test robot
2018-02-23 23:48 ` Raslan, KarimAllah
2018-04-12 14:33 ` Paolo Bonzini
2018-02-21 17:47 ` [PATCH 05/10] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap KarimAllah Ahmed
2018-02-23 21:36 ` Konrad Rzeszutek Wilk
2018-02-23 23:45 ` Raslan, KarimAllah
2018-04-12 14:36 ` Paolo Bonzini
2018-02-21 17:47 ` [PATCH 06/10] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page KarimAllah Ahmed
2018-04-12 14:38 ` Paolo Bonzini
2018-04-12 17:57 ` Sean Christopherson
2018-04-12 20:23 ` Paolo Bonzini
2018-02-21 17:47 ` [PATCH 07/10] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table KarimAllah Ahmed
2018-04-12 14:39 ` Paolo Bonzini
2018-02-21 17:47 ` [PATCH 08/10] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated KarimAllah Ahmed
2018-02-22 2:56 ` Raslan, KarimAllah
2018-02-21 17:47 ` [PATCH 09/10] KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending KarimAllah Ahmed
2018-02-21 17:47 ` [PATCH 10/10] KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg KarimAllah Ahmed
2018-03-01 15:24 ` [PATCH 00/10] KVM/X86: Handle guest memory that does not have a struct page Raslan, KarimAllah
2018-03-01 17:51 ` Jim Mattson
2018-03-02 17:40 ` Paolo Bonzini
2018-04-12 14:59 ` Paolo Bonzini
2018-04-12 21:25 ` Raslan, KarimAllah
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