search for: set_early_idt_handler

On Mon, Aug 24, 2020 at 10:54:37AM +0200, Joerg Roedel wrote: > +#ifdef CONFIG_AMD_MEM_ENCRYPT > +static void set_early_idt_handler(gate_desc *idt, int n, void *handler) > +{ > + struct idt_data data; > + gate_desc desc; > + > + init_idt_data(&data, n, handler); > + idt_init_desc(&desc, &data); > + native_write_idt_entry(idt, n, &desc); > +} > +#endif > + > +static struct desc_pt...

On Mon, Aug 24, 2020 at 10:54:37AM +0200, Joerg Roedel wrote: > +#ifdef CONFIG_AMD_MEM_ENCRYPT > +static void set_early_idt_handler(gate_desc *idt, int n, void *handler) > +{ > + struct idt_data data; > + gate_desc desc; > + > + init_idt_data(&data, n, handler); > + idt_init_desc(&desc, &data); > + native_write_idt_entry(idt, n, &desc); > +} > +#endif > + > +static struct desc_pt...

...11,7 @@ #include <asm/desc.h> #include <asm/hw_irq.h> #include <asm/setup.h> +#include <asm/sev-es.h> struct idt_data { unsigned int vector; @@ -408,3 +409,38 @@ void early_load_idt(void) { load_idt(&idt_descr); } + +#ifdef CONFIG_AMD_MEM_ENCRYPT +static void set_early_idt_handler(gate_desc *idt, int n, void *handler) +{ + struct idt_data data; + gate_desc desc; + + init_idt_data(&data, n, handler); + idt_init_desc(&desc, &data); + native_write_idt_entry(idt, n, &desc); +} +#endif + +static struct desc_ptr early_idt_descr __initdata = { + .size = IDT_TABLE_S...

On Mon, Aug 31, 2020 at 11:45:41AM +0200, Borislav Petkov wrote: > On Mon, Aug 24, 2020 at 10:54:37AM +0200, Joerg Roedel wrote: > > +#ifdef CONFIG_AMD_MEM_ENCRYPT > > + /* VMM Communication Exception */ > > + handler = fixup_pointer(vc_no_ghcb, physbase); > > + set_early_idt_handler(idt, X86_TRAP_VC, handler); > > This function is used only once AFAICT - you might just as well add its > three-lined body here and save yourself the function definition and > ifdeffery above... True, but having a separate function might be handy when support for #VE and #HV is develo...

From: Joerg Roedel <jroedel at suse.de> Hi, here is the new version of the SEV-ES client enabling patch-set. It is based on the latest tip/master branch and contains the necessary changes. In particular those ar: - Enabling CR4.FSGSBASE early on supported processors so that early #VC exceptions on APs can be handled. - Add another patch (patch 1) to fix a KVM frame-size build

Hi, here is the first public post of the patch-set to enable Linux to run under SEV-ES enabled hypervisors. The code is mostly feature-complete, but there are still a couple of bugs to fix. Nevertheless, given the size of the patch-set, I think it is about time to ask for initial feedback of the changes that come with it. To better understand the code here is a quick explanation of SEV-ES first.

Hi, here is the first public post of the patch-set to enable Linux to run under SEV-ES enabled hypervisors. The code is mostly feature-complete, but there are still a couple of bugs to fix. Nevertheless, given the size of the patch-set, I think it is about time to ask for initial feedback of the changes that come with it. To better understand the code here is a quick explanation of SEV-ES first.

From: Joerg Roedel <jroedel at suse.de> Hi, here is the fourth version of the SEV-ES Guest Support patches. I addressed the review comments sent to me for the previous version and rebased the code v5.8-rc5. The biggest change in this version is the IST handling code for the #VC handler. I adapted the entry code for the #VC handler to the big pile of entry code changes merged into

From: Joerg Roedel <jroedel at suse.de> Hi, here is the fourth version of the SEV-ES Guest Support patches. I addressed the review comments sent to me for the previous version and rebased the code v5.8-rc5. The biggest change in this version is the IST handling code for the #VC handler. I adapted the entry code for the #VC handler to the big pile of entry code changes merged into

From: Joerg Roedel <jroedel at suse.de> Hi, here is a rebased version of the latest SEV-ES patches. They are now based on latest tip/master instead of upstream Linux and include the necessary changes. Changes to v4 are in particular: - Moved early IDT setup code to idt.c, because the idt_descr and the idt_table are now static - This required to make stack protector work early (or

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by