search for: load_segments

The previous MEMDISK El Torito code merge did not actually work without this. Signed-off-by: Shao Miller <shao.miller at yrdsb.edu.on.ca> --- memdisk/setup.c | 17 +++++++++-------- 1 files changed, 9 insertions(+), 8 deletions(-) diff --git a/memdisk/setup.c b/memdisk/setup.c index 40f3f8c..5a45f39 100644 --- a/memdisk/setup.c +++ b/memdisk/setup.c @@ -338,6 +338,7 @@ struct geometry

1: correct LDT checks 2: add address validity check to guest_map_l1e() 3: use {rd,wr}{fs,gs}base when available 4: check for canonical address before doing page walks Signed-off-by: Jan Beulich <jbeulich@suse.com>

In debugging the sles9 port on 64 bit MP machines, I am seeing a problem where the hypervisor takes a fault in loading fs in the context switch code (load_segments()). The selector is one of the TLS selectors. It appears that the cpu in question has updated this selector with a value of 0 just prior to the problem I am seeing. Looking at the Linux context switch code, we first update the TLS selector values of the incoming context before we load the segment...

Index: 2006-10-04/xen/arch/x86/domain.c =================================================================== --- 2006-10-04.orig/xen/arch/x86/domain.c 2006-10-04 15:03:07.000000000 +0200 +++ 2006-10-04/xen/arch/x86/domain.c 2006-10-04 15:11:03.000000000 +0200 @@ -550,10 +550,10 @@ static void load_segments(struct vcpu *n /* CS longword also contains full evtchn_upcall_mask. */ cs_and_mask = (unsigned short)regs->cs | - ((unsigned int)n->vcpu_info->evtchn_upcall_mask << 16); + ((unsigned int)vcpu_info(n, evtchn_upcall_mask) <&...

Commit 86781624 ("x86_emulate: PUSH <mem> must read source operand just once") corrected the operands of those of the operations of opcode extension group 5 that only read memory from SrcMem to DstMem, but failed to also switch the use of "dst" here to "src". Reported-by: Anthony Perard <anthony.perard@citrix.com> Signed-off-by: Jan Beulich

...map_p2m_entry: 408 0xffff830000169fb9 l2e_rw_fault: 400 0xffff83000017d0c0 l2e_rw_fault: 400 0xffff830000188881 l2e_rw_fault: 400 0xffff830000196219 handle_mmio: 400 0xffff8300001356d4 load_segments: 384 0xffff8300001b9363 show_registers: 384 0xffff8300001b9a60 show_registers: 384 0xffff830000116079 do_multicall: 376 0xffff8300001166bb do_multicall: 376 0xffff830000165c39 resync_all:...

This set of patches converts the way frames gets created from using PUSHes/POPs to using MOVes, thus allowing (in certain cases) to avoid saving/restoring part of the register set. While the place where the (small) win from this comes from varies between CPUs, the net effect is a 1 to 2% reduction on a combined interruption entry and exit when the full state save can be avoided. 1: use MOV

...ule.c +++ b/com32/lib/sys/module/elf_module.c @@ -14,6 +14,7 @@ #include <linux/list.h> #include <sys/module.h> +#include <sys/exec.h> #include "elfutils.h" #include "common.h" @@ -50,7 +51,7 @@ static int check_header(Elf32_Ehdr *elf_hdr) { static int load_segments(struct elf_module *module, Elf32_Ehdr *elf_hdr) { int i; int res = 0; - void *pht = NULL; + char *pht = NULL; Elf32_Phdr *cr_pht; Elf32_Addr min_addr = 0x00000000; // Min. ELF vaddr @@ -136,8 +137,8 @@ static int load_segments(struct elf_module *module, Elf32_Ehdr *elf_hdr) { // hea...

Hi, These patches contain support for some features that are already in Syslinux 4 but weren't working properly on the elflink branch. It's another step closer to feature parity with Syslinux 4. Having to jump through the comboot API for localboot support is less than ideal and I'll eventually fix that, probably when we move a big chunk of code from asm to C. Also, there's a

...y->d_un.d_ptr; + if (module->nr_needed < MAX_NR_DEPS) + module->needed[module->nr_needed++] = dyn_entry->d_un.d_ptr; else { printf("Too many dependencies!\n"); return -1; @@ -502,40 +497,37 @@ int module_load(struct elf_module *module) { CHECKED(res, load_segments(module, &elf_hdr), error); //printf("bleah... 3\n"); // Obtain dynamic linking information - nr_needed = 0; CHECKED(res, prepare_dynlinking(module), error); //printf("check... 4\n"); /* Find modules we need to load as dependencies */ if (module->str_table) {...

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.