From mboxrd@z Thu Jan 1 00:00:00 1970 From: Akinobu Mita Subject: [PATCH 2/2] kvm: use kvm_get_gdt() and kvm_read_ldt() Date: Sun, 19 Jul 2009 00:00:01 +0900 Message-ID: <20090718150000.GA11279@localhost.localdomain> References: <20090718145830.GA11275@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-2022-jp Cc: Avi Kivity , kvm@vger.kernel.org, x86@kernel.org To: linux-kernel@vger.kernel.org Return-path: Content-Disposition: inline In-Reply-To: <20090718145830.GA11275@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org Use kvm_get_gdt() and kvm_read_ldt() to reduce inline assembly code. Cc: Avi Kivity Cc: kvm@vger.kernel.org Signed-off-by: Akinobu Mita --- arch/x86/kvm/svm.c | 6 +++--- arch/x86/kvm/x86.c | 5 ++--- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 71510e0..c7c6234 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -263,7 +263,7 @@ static void svm_hardware_enable(void *garbage) struct svm_cpu_data *svm_data; uint64_t efer; - struct desc_ptr gdt_descr; + struct descriptor_table gdt_descr; struct desc_struct *gdt; int me = raw_smp_processor_id(); @@ -283,8 +283,8 @@ static void svm_hardware_enable(void *garbage) svm_data->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1; svm_data->next_asid = svm_data->max_asid + 1; - asm volatile ("sgdt %0" : "=m"(gdt_descr)); - gdt = (struct desc_struct *)gdt_descr.address; + kvm_get_gdt(&gdt_descr); + gdt = (struct desc_struct *)gdt_descr.base; svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS); rdmsrl(MSR_EFER, efer); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 38d9b53..8d32333 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -122,13 +122,12 @@ unsigned long segment_base(u16 selector) if (selector == 0) return 0; - asm("sgdt %0" : "=m"(gdt)); + kvm_get_gdt(&gdt); table_base = gdt.base; if (selector & 4) { /* from ldt */ - u16 ldt_selector; + u16 ldt_selector = kvm_read_ldt(); - asm("sldt %0" : "=g"(ldt_selector)); table_base = segment_base(ldt_selector); } d = (struct desc_struct *)(table_base + (selector & ~7)); -- 1.6.0.6