search for: forward_exception

Displaying 3 results from an estimated 3 matches for "forward_exception".

2020 Feb 11
0
[PATCH 39/62] x86/sev-es: Harden runtime #VC handler for exceptions from user-space
...D: - pr_emerg("PANIC: Failed to decode instruction (exit-code 0x%02lx IP: 0x%lx)\n", - exit_code, regs->ip); + pr_err_ratelimited("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 d...
2020 Feb 11
83
[RFC PATCH 00/62] Linux as SEV-ES Guest Support
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.
2020 Feb 11
83
[RFC PATCH 00/62] Linux as SEV-ES Guest Support
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.