search for: ghcb_fault

...pr 28, 2020 at 05:16:34PM +0200, Joerg Roedel wrote: > @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) > * - User faults > * - Reserved bits set > */ > - if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > + if (ghcb_fault || > + error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > /* Print some information for debugging */ > - error_putstr("Unexpected page-fault:"); > + if (ghcb_fault) > + error_putstr("Page-fault on GHCB page:"); > + else > + error_p...

...pr 28, 2020 at 05:16:34PM +0200, Joerg Roedel wrote: > @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) > * - User faults > * - Reserved bits set > */ > - if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > + if (ghcb_fault || > + error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > /* Print some information for debugging */ > - error_putstr("Unexpected page-fault:"); > + if (ghcb_fault) > + error_putstr("Page-fault on GHCB page:"); > + else > + error_p...

...p;mapping_info, address, 0, _PAGE_PRESENT); +} + void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) { - unsigned long address = native_read_cr2() & PMD_MASK; - unsigned long end = address + PMD_SIZE; + unsigned long address = native_read_cr2(); + unsigned long end; + bool ghcb_fault; + + ghcb_fault = sev_es_check_ghcb_fault(address); + + address &= PMD_MASK; + end = address + PMD_SIZE; /* * Check for unexpected error codes. Unexpected are: @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) * - User faults * -...

...0, Joerg Roedel wrote: > > @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) > > * - User faults > > * - Reserved bits set > > */ > > - if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > > + if (ghcb_fault || > > + error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) { > > /* Print some information for debugging */ > > - error_putstr("Unexpected page-fault:"); > > + if (ghcb_fault) > > + error_putstr("Page-fault on GHCB page:"); >...

...0200, Joerg Roedel wrote: > Yeah, I had this this way in v2, but changed it upon you request[1] :) Yeah, I was wondering why this isn't a separate function - you like them so much. :-P > [1] https://lore.kernel.org/lkml/20200402114941.GA9352 at zn.tnic/ But that one didn't have the ghcb_fault check. Maybe it was being added later... :) Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette

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

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 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 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