search for: store_ldt

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) +#define load_gdt(dtr) asm volatile("lgdtl %0"::"m" (*dtr)) +#define load_idt(dtr) asm volatile("lidtl %0"::"m" (*dtr)) +#define load_tr(tr) asm volatile("ltr %0"::"mr" (tr)) +#defin...

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) +#define load_gdt(dtr) asm volatile("lgdtl %0"::"m" (*dtr)) +#define load_idt(dtr) asm volatile("lidtl %0"::"m" (*dtr)) +#define load_tr(tr) asm volatile("ltr %0"::"mr" (tr)) +#defin...

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) +#define load_gdt(dtr) asm volatile("lgdtl %0"::"m" (*dtr)) +#define load_idt(dtr) asm volatile("lidtl %0"::"m" (*dtr)) +#define load_tr(tr) asm volatile("ltr %0"::"mr" (tr)) +#defin...

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) +#define load_gdt(dtr) asm volatile("lgdtl %0"::"m" (*dtr)) +#define load_idt(dtr) asm volatile("lidtl %0"::"m" (*dtr)) +#define load_tr(tr) asm volatile("ltr %0"::"mr" (tr)) +#defin...

...fine load_ldt(ldt) asm volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) asm ("sgdtl %0":"=m" (*dtr)) -#define store_idt(dtr) asm ("sidtl %0":"=m" (*dtr)) -#define store_tr(tr) asm ("str %0":"=mr" (tr)) -#define store_ldt(ldt) asm ("sldt %0":"=mr" (ldt)) - /* * This is the ldt that every process will get unless we need * something other than this. @@ -99,22 +86,10 @@ "1" (limit)); \ } while(0) -#define set_base(desc,base) _set_base((desc), (base)) -#define set_limit...

...fine load_ldt(ldt) asm volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) asm ("sgdtl %0":"=m" (*dtr)) -#define store_idt(dtr) asm ("sidtl %0":"=m" (*dtr)) -#define store_tr(tr) asm ("str %0":"=mr" (tr)) -#define store_ldt(ldt) asm ("sldt %0":"=mr" (ldt)) - /* * This is the ldt that every process will get unless we need * something other than this. @@ -99,22 +86,10 @@ "1" (limit)); \ } while(0) -#define set_base(desc,base) _set_base((desc), (base)) -#define set_limit...

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) - /* * This is the ldt that every process will get unless we need * something other than this. */ extern struct desc_struct default_ldt[]; +extern struct desc_struct idt_table[]; extern void set_intr_gate(unsigned int irq, void * add...

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) - -#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) -#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) -#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) -#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) - /* * This is the ldt that every process will get unless we need * something other than this. */ extern struct desc_struct default_ldt[]; +extern struct desc_struct idt_table[]; extern void set_intr_gate(unsigned int irq, void * add...

(Andrew, please sit these in the -mm tree for cooking) Create a paravirt.h header for (almost) all the critical operations which need to be replaced with hypervisor calls. For the moment, this simply includes no_paravirt.h, where all the native implementations now live. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Zachary Amsden <zach@vmware.com>

(Andrew, please sit these in the -mm tree for cooking) Create a paravirt.h header for (almost) all the critical operations which need to be replaced with hypervisor calls. For the moment, this simply includes no_paravirt.h, where all the native implementations now live. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Zachary Amsden <zach@vmware.com>

Chris Wright wrote: >* Zachary Amsden (zach@vmware.com) wrote: > > >>Does Xen assume page aligned descriptor tables? I assume from this >> >> > >Yes. > > > >>patch and snippets I have gathered from others, that is a yes, and other >>things here imply that DT pages are not shadowed. If so, Xen itself >>must have live segments

Chris Wright wrote: >* Zachary Amsden (zach@vmware.com) wrote: > > >>Does Xen assume page aligned descriptor tables? I assume from this >> >> > >Yes. > > > >>patch and snippets I have gathered from others, that is a yes, and other >>things here imply that DT pages are not shadowed. If so, Xen itself >>must have live segments

Hi all, I've been looking at finding common ground between the VMI, Xen and other paravirtualization approaches, and after some discussion, we're getting somewhere. These first two patches are the fundamentals, stolen mainly from the VMI patches: removing assumptions about the kernel running in ring 0, and macro-izing all the obvious para-virtualize-needing insns. The third patch is

Hi all, I've been looking at finding common ground between the VMI, Xen and other paravirtualization approaches, and after some discussion, we're getting somewhere. These first two patches are the fundamentals, stolen mainly from the VMI patches: removing assumptions about the kernel running in ring 0, and macro-izing all the obvious para-virtualize-needing insns. The third patch is

Hi, this is a series of patches that unify the struct desc_struct and friends across x86_64 and i386. As usual, it provides paravirt capabilities as a side-effect for x86_64. I consider the main goal, namely, of unifying the desc_struct, an ongoing effort, being this the beginning. A lot of old code has to be touched to accomplish that. I don't consider this patch ready for inclusion.

Hi, this is a series of patches that unify the struct desc_struct and friends across x86_64 and i386. As usual, it provides paravirt capabilities as a side-effect for x86_64. I consider the main goal, namely, of unifying the desc_struct, an ongoing effort, being this the beginning. A lot of old code has to be touched to accomplish that. I don't consider this patch ready for inclusion.

...t) __asm__ __volatile("lldt %0"::"mr" (ldt)) + +#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) +#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) +#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) +#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) + +/* + * Load a segment. Fall back on loading the zero + * segment if something goes wrong.. + */ +#define loadsegment(seg,value) \ + asm volatile("\n" \ + "1:\t" \ + &quot...

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

This series removes some no longer needed stuff from paravirt infrastructure and puts large quantities of paravirt ops under a new config option PARAVIRT_XXL which is selected by XEN_PV only. A pvops kernel without XEN_PV being configured is about 2.5% smaller with this series applied. tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt: Fix spectre-v2 mitigations for