search for: estacks

..._DF] = __this_cpu_ist_top_va(DF); - tss->x86_tss.ist[IST_INDEX_NMI] = __this_cpu_ist_top_va(NMI); - tss->x86_tss.ist[IST_INDEX_DB] = __this_cpu_ist_top_va(DB); - tss->x86_tss.ist[IST_INDEX_MCE] = __this_cpu_ist_top_va(MCE); + tss->x86_tss.ist[IST_INDEX_DF] = CEA_ESTACK_TOP(&cea->estacks, DF); + tss->x86_tss.ist[IST_INDEX_NMI] = CEA_ESTACK_TOP(&cea->estacks, NMI); + tss->x86_tss.ist[IST_INDEX_DB] = CEA_ESTACK_TOP(&cea->estacks, DB); + tss->x86_tss.ist[IST_INDEX_MCE] = CEA_ESTACK_TOP(&cea->estacks, MCE); /* Only mapped when SEV-ES is active */ - tss-...

I have a minor problem with the PostScript generated by R-0.63.1. Specifically, the files generated *will* work in: ghostview on an HP LaserJet on an Apple LaserWriter *will not* work in: ghostscript under xdvi on a SPARCprinter The error message on the SPARCprinter was Error: /invalidfont Command: 'definefont' Ostack: /Font5 /Font5 font(Symbol,1) Estack:

...asm/cpu_entry_area.h b/arch/x86/include/asm/cpu_entry_area.h index 8902fdb7de13..f87e4c0c16f4 100644 --- a/arch/x86/include/asm/cpu_entry_area.h +++ b/arch/x86/include/asm/cpu_entry_area.h @@ -11,25 +11,29 @@ #ifdef CONFIG_X86_64 /* Macro to enforce the same ordering and stack sizes */ -#define ESTACKS_MEMBERS(guardsize) \ - char DF_stack_guard[guardsize]; \ - char DF_stack[EXCEPTION_STKSZ]; \ - char NMI_stack_guard[guardsize]; \ - char NMI_stack[EXCEPTION_STKSZ]; \ - char DB_stack_guard[guardsize]; \ - char DB_stack[EXCEPTION_STKSZ]; \ - char MCE_stack_guard[guardsize]; \ - char MCE_stack[EXCEP...

...f --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index d415368f16ec..2a7cc72db1d5 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -78,6 +78,67 @@ static void __init sev_es_setup_vc_stacks(int cpu) tss->x86_tss.ist[IST_INDEX_VC] = CEA_ESTACK_TOP(&cea->estacks, VC); } +static bool on_vc_stack(unsigned long sp) +{ + return ((sp >= __this_cpu_ist_bot_va(VC)) && (sp < __this_cpu_ist_top_va(VC))); +} + +/* + * This function handles the case when an NMI or an NMI-like exception + * like #DB is raised in the #VC exception handler entry code. I...

...}; + +/* Mapping in cpu_entry_area */ +struct cea_vmm_exception_stacks { + VC_STACK_MEMBERS(PAGE_SIZE, EXCEPTION_STKSZ) +}; + #endif #ifdef CONFIG_X86_32 @@ -110,6 +165,12 @@ struct cpu_entry_area { * Exception stacks used for IST entries with guard pages. */ struct cea_exception_stacks estacks; + + /* + * IST Exception stacks for VC handler - Only allocated and mapped when + * SEV-ES is active. + */ + struct cea_vmm_exception_stacks vc_stacks; #endif /* * Per CPU debug store for Intel performance monitoring. Wastes a diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/i...

.../sev-es.c b/arch/x86/kernel/sev-es.c > index d415368f16ec..2a7cc72db1d5 100644 > --- a/arch/x86/kernel/sev-es.c > +++ b/arch/x86/kernel/sev-es.c > @@ -78,6 +78,67 @@ static void __init sev_es_setup_vc_stacks(int cpu) > tss->x86_tss.ist[IST_INDEX_VC] = CEA_ESTACK_TOP(&cea->estacks, VC); > } > > +static bool on_vc_stack(unsigned long sp) noinstr or __always_inline > +{ > + return ((sp >= __this_cpu_ist_bot_va(VC)) && (sp < __this_cpu_ist_top_va(VC))); > +} > + > +/* > + * This function handles the case when an NMI or an NMI-like e...

.../sev-es.c b/arch/x86/kernel/sev-es.c > index d415368f16ec..2a7cc72db1d5 100644 > --- a/arch/x86/kernel/sev-es.c > +++ b/arch/x86/kernel/sev-es.c > @@ -78,6 +78,67 @@ static void __init sev_es_setup_vc_stacks(int cpu) > tss->x86_tss.ist[IST_INDEX_VC] = CEA_ESTACK_TOP(&cea->estacks, VC); > } > > +static bool on_vc_stack(unsigned long sp) noinstr or __always_inline > +{ > + return ((sp >= __this_cpu_ist_bot_va(VC)) && (sp < __this_cpu_ist_top_va(VC))); > +} > + > +/* > + * This function handles the case when an NMI or an NMI-like e...

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

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

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 new version of the SEV-ES Guest Support patches for x86. The previous versions can be found as a linked list starting here: https://lore.kernel.org/lkml/20200824085511.7553-1-joro at 8bytes.org/ I updated the patch-set based on ther review comments I got and the discussions around it. Another important change is that the early IDT

From: Joerg Roedel <jroedel at suse.de> Hi, here is a new version of the SEV-ES Guest Support patches for x86. The previous versions can be found as a linked list starting here: https://lore.kernel.org/lkml/20200824085511.7553-1-joro at 8bytes.org/ I updated the patch-set based on ther review comments I got and the discussions around it. Another important change is that the early IDT

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