diff options
Diffstat (limited to 'drivers/lguest')
| -rw-r--r-- | drivers/lguest/lguest.c | 7 | ||||
| -rw-r--r-- | drivers/lguest/lguest_asm.S | 6 |
2 files changed, 7 insertions, 6 deletions
diff --git a/drivers/lguest/lguest.c b/drivers/lguest/lguest.c index 6e135ac0834..ee1c6d05c3d 100644 --- a/drivers/lguest/lguest.c +++ b/drivers/lguest/lguest.c @@ -964,11 +964,12 @@ __init void lguest_init(void *boot) { /* Copy boot parameters first: the Launcher put the physical location * in %esi, and head.S converted that to a virtual address and handed - * it to us. */ - memcpy(&boot_params, boot, PARAM_SIZE); + * it to us. We use "__memcpy" because "memcpy" sometimes tries to do + * tricky things to go faster, and we're not ready for that. */ + __memcpy(&boot_params, boot, PARAM_SIZE); /* The boot parameters also tell us where the command-line is: save * that, too. */ - memcpy(boot_command_line, __va(boot_params.hdr.cmd_line_ptr), + __memcpy(boot_command_line, __va(boot_params.hdr.cmd_line_ptr), COMMAND_LINE_SIZE); /* We're under lguest, paravirt is enabled, and we're running at diff --git a/drivers/lguest/lguest_asm.S b/drivers/lguest/lguest_asm.S index f182c6a3620..1ddcd5cd20f 100644 --- a/drivers/lguest/lguest_asm.S +++ b/drivers/lguest/lguest_asm.S @@ -22,8 +22,9 @@ jmp lguest_init /*G:055 We create a macro which puts the assembler code between lgstart_ and - * lgend_ markers. These templates end up in the .init.text section, so they - * are discarded after boot. */ + * lgend_ markers. These templates are put in the .text section: they can't be + * discarded after boot as we may need to patch modules, too. */ +.text #define LGUEST_PATCH(name, insns...) \ lgstart_##name: insns; lgend_##name:; \ .globl lgstart_##name; .globl lgend_##name @@ -34,7 +35,6 @@ LGUEST_PATCH(popf, movl %eax, lguest_data+LGUEST_DATA_irq_enabled) LGUEST_PATCH(pushf, movl lguest_data+LGUEST_DATA_irq_enabled, %eax) /*:*/ -.text /* These demark the EIP range where host should never deliver interrupts. */ .global lguest_noirq_start .global lguest_noirq_end |