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| author |   Joerg Roedel <joerg.roedel@amd.com> | 2008-07-02 16:02:11 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@qumranet.com> | 2008-07-20 12:42:37 +0300 |
| commit | 0da1db75a2feca54564add30828bab658982481c (patch) | |
| tree | 7b4a148573e0e6df60682124b26de5d71af0fad3 /arch | |
| parent | KVM: s390: rename private structures (diff) | |
| download | linux-dev-0da1db75a2feca54564add30828bab658982481c.tar.xz linux-dev-0da1db75a2feca54564add30828bab658982481c.zip | |
KVM: SVM: fix suspend/resume support
On suspend the svm_hardware_disable function is called which frees all svm_data
variables. On resume they are not re-allocated. This patch removes the
deallocation of svm_data from the hardware_disable function to the
hardware_unsetup function which is not called on suspend.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 238e8f3afaf4..858e29702232 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -272,19 +272,11 @@ static int has_svm(void) static void svm_hardware_disable(void *garbage) { - struct svm_cpu_data *svm_data - = per_cpu(svm_data, raw_smp_processor_id()); - - if (svm_data) { - uint64_t efer; + uint64_t efer; - wrmsrl(MSR_VM_HSAVE_PA, 0); - rdmsrl(MSR_EFER, efer); - wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); - per_cpu(svm_data, raw_smp_processor_id()) = NULL; - __free_page(svm_data->save_area); - kfree(svm_data); - } + wrmsrl(MSR_VM_HSAVE_PA, 0); + rdmsrl(MSR_EFER, efer); + wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); } static void svm_hardware_enable(void *garbage) @@ -323,6 +315,19 @@ static void svm_hardware_enable(void *garbage) page_to_pfn(svm_data->save_area) << PAGE_SHIFT); } +static void svm_cpu_uninit(int cpu) +{ + struct svm_cpu_data *svm_data + = per_cpu(svm_data, raw_smp_processor_id()); + + if (!svm_data) + return; + + per_cpu(svm_data, raw_smp_processor_id()) = NULL; + __free_page(svm_data->save_area); + kfree(svm_data); +} + static int svm_cpu_init(int cpu) { struct svm_cpu_data *svm_data; @@ -460,6 +465,11 @@ err: static __exit void svm_hardware_unsetup(void) { + int cpu; + + for_each_online_cpu(cpu) + svm_cpu_uninit(cpu); + __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER); iopm_base = 0; } |