search for: _head

...o_pf_error(const char *msg, unsigned long error_code, + unsigned long address, unsigned long ip) +{ + error_putstr(msg); + + error_putstr("\nError Code: "); + error_puthex(error_code); + error_putstr("\nCR2: 0x"); + error_puthex(address); + error_putstr("\nRIP relative to _head: 0x"); + error_puthex(ip - (unsigned long)_head); + error_putstr("\n"); + + error("Stopping.\n"); +} + void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) { unsigned long address = native_read_cr2(); @@ -309,27 +325,15 @@ void do_boot_page_fault(stru...

...o_pf_error(const char *msg, unsigned long error_code, + unsigned long address, unsigned long ip) +{ + error_putstr(msg); + + error_putstr("\nError Code: "); + error_puthex(error_code); + error_putstr("\nCR2: 0x"); + error_puthex(address); + error_putstr("\nRIP relative to _head: 0x"); + error_puthex(ip - (unsigned long)_head); + error_putstr("\n"); + + error("Stopping.\n"); +} + void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) { unsigned long address = native_read_cr2(); @@ -309,27 +325,15 @@ void do_boot_page_fault(stru...

...{ - unsigned long start, size; - /* If running as an SEV guest, the encryption mask is required. */ set_sev_encryption_mask(); @@ -155,9 +151,7 @@ void initialize_identity_maps(void) * New page-table is set up - map the kernel image and load it * into cr3. */ - start = (unsigned long)_head; - size = _end - _head; - add_identity_map(start, size); + add_identity_map((unsigned long)_head, (unsigned long)_end); write_cr3(top_level_pgt); } @@ -189,7 +183,8 @@ static void do_pf_error(const char *msg, unsigned long error_code, void do_boot_page_fault(struct pt_regs *regs, unsigned...

...o_pf_error(const char *msg, unsigned long error_code, + unsigned long address, unsigned long ip) +{ + error_putstr(msg); + + error_putstr("\nError Code: "); + error_puthex(error_code); + error_putstr("\nCR2: 0x"); + error_puthex(address); + error_putstr("\nRIP relative to _head: 0x"); + error_puthex(ip - (unsigned long)_head); + error_putstr("\n"); + + error("Stopping.\n"); +} + +void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) +{ + unsigned long address = native_read_cr2(); + + /* + * Check for unexpected error codes. Unex...

...ody into the call site instead... > +{ > + error_putstr("Unexpected page-fault:"); > + error_putstr("\nError Code: "); > + error_puthex(error_code); > + error_putstr("\nCR2: 0x"); > + error_puthex(address); > + error_putstr("\nRIP relative to _head: 0x"); > + error_puthex(regs->ip - (unsigned long)_head); > + error_putstr("\n"); > + > + error("Stopping.\n"); > +} > + > +void do_boot_page_fault(struct pt_regs *regs) > +{ > + unsigned long address = native_read_cr2(); > + unsigned long e...

...nd = round_up(end, PMD_SIZE); - if (start >= end) - return; - - /* Build the mapping. */ - kernel_ident_mapping_init(&mapping_info, (pgd_t *)top_level_pgt, - start, end); + /* + * New page-table is set up - map the kernel image and load it + * into cr3. + */ + start = (unsigned long)_head; + size = _end - _head; + add_identity_map(start, size); + write_cr3(top_level_pgt); } /* diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index 7c61a8c5b9cf..856dc1c9bb0d 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -9...

This patch series introduces the shared ring used by the front-end to pass request descriptors to tapdisk, as well as responses from tapdisk to the front-end. Requests from this ring end up in tapdisk''s standard request queue. When the tapback daemon detects that the front-end tries to connect to the back-end, it spawns a tapdisk and tells it to connect to the shared ring. The shared

This series: 1. Updates the boot protocol to version 2.07 2. Clean up the existing build process, to get rid of tools/build and make the linker do more heavy lifting 3. Make the bzImage payload an ELF file. The bootloader can extract this as a naked ELF file by skipping over boot_params.setup_sects worth of 16-bit setup code. 4. Update the boot_params to 2.07, and update the

This series: 1. Updates the boot protocol to version 2.07 2. Clean up the existing build process, to get rid of tools/build and make the linker do more heavy lifting 3. Make the bzImage payload an ELF file. The bootloader can extract this as a naked ELF file by skipping over boot_params.setup_sects worth of 16-bit setup code. 4. Update the boot_params to 2.07, and update the

...quot;, "elf32-i386") +/* OUTPUT_FORMAT("binary") */ +OUTPUT_FORMAT("elf32-i386") OUTPUT_ARCH(i386) ENTRY(startup_32) SECTIONS { - /* Be careful parts of head.S assume startup_32 is at - * address 0. - */ . = 0 ; .text.head : { + *(.elfhdr) _head = . ; *(.text.head) _ehead = . ; @@ -33,6 +32,7 @@ SECTIONS *(.data.*) _edata = . ; } + _filesz = . ; .bss : { _bss = . ; *(.bss) @@ -40,4 +40,11 @@ SECTIONS *(COMMON) _end = . ; } + _memsz = .; + + .notes : { + _notes = . ; + *(.note*) + _notesz = . - _notes ; + }...

...quot;, "elf32-i386") +/* OUTPUT_FORMAT("binary") */ +OUTPUT_FORMAT("elf32-i386") OUTPUT_ARCH(i386) ENTRY(startup_32) SECTIONS { - /* Be careful parts of head.S assume startup_32 is at - * address 0. - */ . = 0 ; .text.head : { + *(.elfhdr) _head = . ; *(.text.head) _ehead = . ; @@ -33,6 +32,7 @@ SECTIONS *(.data.*) _edata = . ; } + _filesz = . ; .bss : { _bss = . ; *(.bss) @@ -40,4 +40,11 @@ SECTIONS *(COMMON) _end = . ; } + _memsz = .; + + .notes : { + _notes = . ; + *(.note*) + _notesz = . - _notes ; + }...

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.

[ This patch depends on the cross-architecture ELF cleanup patch. ] This series updates the boot protocol to 2.07 and uses it to implement paravirtual booting. This allows the bootloader to tell the kernel what kind of hardware/pseudo-hardware environment it's coming up under, and the kernel can use the appropriate boot sequence code. Specifically: - Update the boot protocol to 2.07, which

[ This patch depends on the cross-architecture ELF cleanup patch. ] This series updates the boot protocol to 2.07 and uses it to implement paravirtual booting. This allows the bootloader to tell the kernel what kind of hardware/pseudo-hardware environment it's coming up under, and the kernel can use the appropriate boot sequence code. Specifically: - Update the boot protocol to 2.07, which

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

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