search for: show_regs

...PANIC: Failed to decode instruction (exit-code 0x%02lx IP: 0x%lx)\n", + exit_code, regs->ip); goto fail; case ES_EXCEPTION: forward_exception(&ctxt); @@ -278,10 +278,24 @@ dotraplinkage void do_vmm_communication(struct pt_regs *regs, unsigned long exit return; fail: - show_regs(regs); + if (user_mode(regs)) { + /* + * Do not kill the machine if user-space triggered the + * exception. Send SIGBUS instead and let user-space deal with + * it. + */ + force_sig_fault(SIGBUS, BUS_OBJERR, (void __user *)0); + } else { + /* Show some debug info */ + show_regs(regs);...

...n.length; } diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 0d20770decce..9de5bb23cb0a 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -7,7 +7,9 @@ * Author: Joerg Roedel <jroedel at suse.de> */ +#include <linux/sched/debug.h> /* For show_regs() */ #include <linux/kernel.h> +#include <linux/printk.h> #include <linux/mm.h> #include <asm/trap_defs.h> @@ -15,8 +17,21 @@ #include <asm/insn-eval.h> #include <asm/fpu/internal.h> #include <asm/processor.h> +#include <asm/trap_defs.h> #inc...

...ISTG(X86_TRAP_VC, vmm_communication, IST_INDEX_VC), +#endif }; /* diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index a4fa7f351bf2..bc3a58427028 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -10,6 +10,7 @@ #include <linux/sched/debug.h> /* For show_regs() */ #include <linux/percpu-defs.h> #include <linux/mem_encrypt.h> +#include <linux/lockdep.h> #include <linux/printk.h> #include <linux/mm_types.h> #include <linux/set_memory.h> @@ -25,7 +26,7 @@ #include <asm/insn-eval.h> #include <asm/fpu/inter...

...n.length; } diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 0b698b653c0b..bb3e702a71eb 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -7,7 +7,9 @@ * Author: Joerg Roedel <jroedel at suse.de> */ +#include <linux/sched/debug.h> /* For show_regs() */ #include <linux/kernel.h> +#include <linux/printk.h> #include <linux/mm.h> #include <asm/sev-es.h> @@ -18,6 +20,18 @@ #include <asm/trapnr.h> #include <asm/svm.h> +/* For early boot hypervisor communication in SEV-ES enabled guests */ +static struct...

Hi Alex: I was looking at an ia64 bug report and noticed that we don''t actually free IRQs in the free_irq_vector hypercall. This would eventually lead to alloc_irq_vector failing. Unless I''m mistaken something like calling pci_disable_device and pci_enable_device can lead to this situation. So I''m wondering what the original problem was and how could we resolve it

...se; } static inline bool sev_es_active(void) { return false; } diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 0e0b28477627..9a5530857db7 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -8,8 +8,11 @@ */ #include <linux/sched/debug.h> /* For show_regs() */ -#include <linux/kernel.h> +#include <linux/percpu-defs.h> +#include <linux/mem_encrypt.h> #include <linux/printk.h> +#include <linux/set_memory.h> +#include <linux/kernel.h> #include <linux/mm.h> #include <asm/trap_defs.h> @@ -28,6 +31,9 @@...

...e(void) { return false; } > diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c > index 0e0b28477627..9a5530857db7 100644 > --- a/arch/x86/kernel/sev-es.c > +++ b/arch/x86/kernel/sev-es.c > @@ -8,8 +8,11 @@ > */ > > #include <linux/sched/debug.h> /* For show_regs() */ > -#include <linux/kernel.h> > +#include <linux/percpu-defs.h> > +#include <linux/mem_encrypt.h> > #include <linux/printk.h> > +#include <linux/set_memory.h> > +#include <linux/kernel.h> > #include <linux/mm.h> > > #includ...

...26 : 0000000000000000 r27 : 0000000000000000 r28 : e00000000fd08bd4 r29 : a0000001007570b8 r30 : a0000001009e5500 r31 : a0000001009e54a0 Call Trace: [<a000000100026000>] show_stack+0x40/0xa0 sp=e00000000fd0f670 bsp=e00000000fd08f68 [<a000000100026a60>] show_regs+0x9a0/0x9e0 sp=e00000000fd0f840 bsp=e00000000fd08f10 [<a000000100037680>] die+0x260/0x3a0 sp=e00000000fd0f840 bsp=e00000000fd08ec8 [<a000000100037810>] die_if_kernel+0x50/0x80 sp=e00000000f...

...26 : 0000000000000000 r27 : 0000000000000000 r28 : e00000000fd08bd4 r29 : a0000001007570b8 r30 : a0000001009e5500 r31 : a0000001009e54a0 Call Trace: [<a000000100026000>] show_stack+0x40/0xa0 sp=e00000000fd0f670 bsp=e00000000fd08f68 [<a000000100026a60>] show_regs+0x9a0/0x9e0 sp=e00000000fd0f840 bsp=e00000000fd08f10 [<a000000100037680>] die+0x260/0x3a0 sp=e00000000fd0f840 bsp=e00000000fd08ec8 [<a000000100037810>] die_if_kernel+0x50/0x80 sp=e00000000f...

...26 : 0000000000000000 r27 : 0000000000000000 r28 : e00000000fd08bd4 r29 : a0000001007570b8 r30 : a0000001009e5500 r31 : a0000001009e54a0 Call Trace: [<a000000100026000>] show_stack+0x40/0xa0 sp=e00000000fd0f670 bsp=e00000000fd08f68 [<a000000100026a60>] show_regs+0x9a0/0x9e0 sp=e00000000fd0f840 bsp=e00000000fd08f10 [<a000000100037680>] die+0x260/0x3a0 sp=e00000000fd0f840 bsp=e00000000fd08ec8 [<a000000100037810>] die_if_kernel+0x50/0x80 sp=e00000000f...

...se; } static inline bool sev_es_active(void) { return false; } diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index bb3e702a71eb..0f28bb1c0022 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -8,8 +8,13 @@ */ #include <linux/sched/debug.h> /* For show_regs() */ -#include <linux/kernel.h> +#include <linux/percpu-defs.h> +#include <linux/mem_encrypt.h> #include <linux/printk.h> +#include <linux/mm_types.h> +#include <linux/set_memory.h> +#include <linux/memblock.h> +#include <linux/kernel.h> #include &l...

...se; } static inline bool sev_es_active(void) { return false; } diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 9de5bb23cb0a..a43d80d5e50e 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -8,8 +8,13 @@ */ #include <linux/sched/debug.h> /* For show_regs() */ -#include <linux/kernel.h> +#include <linux/percpu-defs.h> +#include <linux/mem_encrypt.h> #include <linux/printk.h> +#include <linux/mm_types.h> +#include <linux/set_memory.h> +#include <linux/memblock.h> +#include <linux/kernel.h> #include &l...

From: Tom Lendacky <thomas.lendacky at amd.com> Add code to handle #VC exceptions on DR7 register reads and writes. This is needed early because show_regs() reads DR7 to print it out. Under SEV-ES there is currently no support for saving/restoring the DRx registers, but software expects to be able to write to the DR7 register. For now, cache the value written to DR7 and return it on read attempts, but do not touch the real hardware DR7. Signed-off-...

...t 05:16:57PM +0200, Joerg Roedel wrote: > diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c > index a4fa7f351bf2..bc3a58427028 100644 > --- a/arch/x86/kernel/sev-es.c > +++ b/arch/x86/kernel/sev-es.c > @@ -10,6 +10,7 @@ > #include <linux/sched/debug.h> /* For show_regs() */ > #include <linux/percpu-defs.h> > #include <linux/mem_encrypt.h> > +#include <linux/lockdep.h> > #include <linux/printk.h> > #include <linux/mm_types.h> > #include <linux/set_memory.h> > @@ -25,7 +26,7 @@ > #include <asm/ins...

...t 05:16:57PM +0200, Joerg Roedel wrote: > diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c > index a4fa7f351bf2..bc3a58427028 100644 > --- a/arch/x86/kernel/sev-es.c > +++ b/arch/x86/kernel/sev-es.c > @@ -10,6 +10,7 @@ > #include <linux/sched/debug.h> /* For show_regs() */ > #include <linux/percpu-defs.h> > #include <linux/mem_encrypt.h> > +#include <linux/lockdep.h> > #include <linux/printk.h> > #include <linux/mm_types.h> > #include <linux/set_memory.h> > @@ -25,7 +26,7 @@ > #include <asm/ins...

...mm1-abi.orig/include/asm-um/ptrace-generic.h 2005-06-17 15:48:29.000000000 -0400 +++ linux-2.6.13-rc5-mm1-abi/include/asm-um/ptrace-generic.h 2005-08-16 11:31:30.000000000 -0400 @@ -9,19 +9,7 @@ #ifndef __ASSEMBLY__ #include "linux/config.h" - -#define pt_regs pt_regs_subarch -#define show_regs show_regs_subarch -#define send_sigtrap send_sigtrap_subarch - -#include "asm/arch/ptrace.h" - -#undef pt_regs -#undef show_regs -#undef send_sigtrap -#undef user_mode -#undef instruction_pointer - +#include "asm/arch/ptrace-abi.h" #include "sysdep/ptrace.h" struct...

...mm1-abi.orig/include/asm-um/ptrace-generic.h 2005-06-17 15:48:29.000000000 -0400 +++ linux-2.6.13-rc5-mm1-abi/include/asm-um/ptrace-generic.h 2005-08-16 11:31:30.000000000 -0400 @@ -9,19 +9,7 @@ #ifndef __ASSEMBLY__ #include "linux/config.h" - -#define pt_regs pt_regs_subarch -#define show_regs show_regs_subarch -#define send_sigtrap send_sigtrap_subarch - -#include "asm/arch/ptrace.h" - -#undef pt_regs -#undef show_regs -#undef send_sigtrap -#undef user_mode -#undef instruction_pointer - +#include "asm/arch/ptrace-abi.h" #include "sysdep/ptrace.h" struct...

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 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