search for: x86_pf_rsvd

Displaying 16 results from an estimated 16 matches for "x86_pf_rsvd".

2020 May 13
2
[PATCH v3 24/75] x86/boot/compressed/64: Unmap GHCB page before booting the kernel
On Tue, Apr 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:"); &gt...
2020 May 13
2
[PATCH v3 24/75] x86/boot/compressed/64: Unmap GHCB page before booting the kernel
On Tue, Apr 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:"); &gt...
2020 May 13
0
[PATCH v3 24/75] x86/boot/compressed/64: Unmap GHCB page before booting the kernel
...Apr 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-f...
2020 Apr 28
0
[PATCH v3 24/75] x86/boot/compressed/64: Unmap GHCB page before booting the kernel
...D_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 * - 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_putstr("Un...
2020 Jul 14
0
[PATCH v4 14/75] x86/boot/compressed/64: Add page-fault handler
...ge_fault(struct pt_regs *regs, unsigned long error_code) +{ + unsigned long address = native_read_cr2(); + + /* + * Check for unexpected error codes. Unexpected are: + * - Faults on present pages + * - User faults + * - Reserved bits set + */ + if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) + do_pf_error("Unexpected page-fault:", error_code, address, regs->ip); + + /* + * Error code is sane - now identity map the 2M region around + * the faulting address. + */ + add_identity_map(address & PMD_MASK, PMD_SIZE); +} diff --git a/arch/x86/boot/compressed/idt_64.c b/a...
2020 Apr 02
0
[PATCH 14/70] x86/boot/compressed/64: Add page-fault handler
..._read_cr2(); > + unsigned long error_code = regs->orig_ax; > + > + /* > + * Check for unexpected error codes. Unexpected are: > + * - Faults on present pages > + * - User faults > + * - Reserved bits set > + */ > + if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_RSVD)) > + pf_error(error_code, address, regs); > + > + /* > + * Error code is sane - now identity map the 2M region around > + * the faulting address. > + */ > + add_identity_map(address & PMD_MASK, PMD_SIZE); > +} > diff --git a/arch/x86/boot/compressed/idt_64.c b/ar...
2020 Apr 28
116
[PATCH v3 00/75] x86: SEV-ES Guest Support
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
2020 Apr 28
116
[PATCH v3 00/75] x86: SEV-ES Guest Support
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
2020 Jul 24
86
[PATCH v5 00/75] x86: SEV-ES Guest Support
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
2020 Jul 14
92
[PATCH v4 00/75] x86: SEV-ES Guest Support
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
2020 Jul 14
92
[PATCH v4 00/75] x86: SEV-ES Guest Support
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
2020 Aug 24
96
[PATCH v6 00/76] x86: SEV-ES Guest Support
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
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.
2020 Sep 07
84
[PATCH v7 00/72] x86: SEV-ES Guest Support
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
2020 Sep 07
84
[PATCH v7 00/72] x86: SEV-ES Guest Support
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