search for: return_to_guest

I''ve encountered a rather unusual bug while I''m implementing live migration on arndale board. After resume, domU kernel starts invoking hypercalls and at some point the hypercall parameters delivered to xen are corrupted. After some debugging (with the help of HW debugger), I found that cache polution happens, and here is the detailed sequence. 1) DomU kernel allocates a local

...n Campbell <ian.campbell@citrix.com> --- xen/arch/arm/entry.S | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/xen/arch/arm/entry.S b/xen/arch/arm/entry.S index 0b9cce5..36f1119 100644 --- a/xen/arch/arm/entry.S +++ b/xen/arch/arm/entry.S @@ -102,6 +102,10 @@ ENTRY(return_to_guest) ENTRY(return_to_hypervisor) ldr lr, [sp, #UREGS_lr] + ldr r11, [sp, #UREGS_pc] + msr ELR_hyp, r11 + ldr r11, [sp, #UREGS_cpsr] + msr SPSR_hyp, r11 pop {r0-r12} add sp, #(UREGS_R8_fiq - UREGS_sp); /* SP, LR, SPSR, PC */ eret -- 1.7.2.5

...+.pabt: .long vector_pabt +.dabt: .long vector_dabt +.adx: .long vector_reserved +.irq: .long vector_irq +.fiq: .long vector_fiq + + .align 5 +vector_reset: +1: + b 1b + + .align 5 +vector_irq: + SAVE_CONTEXT 0x18, 4 + + mrs r0, spsr + and r0, r0, #PSR_MODE_MASK + eors r0, r0, #PSR_MODE_SVC + + bne return_to_guest + + cpsid i + + RESTORE_CONTEXT + + .align 5 +vector_dabt: + str r0, [sp, #-16] + str lr, [sp, #-12] + mrs r0, spsr + str r0, [sp, #-8] + sub r0, sp, #16 + + msr cpsr_cxsf, #(PSR_I_BIT | PSR_F_BIT | PSR_MODE_SVC) + + sub sp, sp, #CTXT_FRAME_SIZE +SPFIX( tst sp, #4 ) +S...

First off, Apologies for the massive patch series... This series boots a 32-bit dom0 kernel to a command prompt on an ARMv8 (AArch64) model. The kernel is the same one as I am currently using with the 32 bit hypervisor I haven''t yet tried starting a guest or anything super advanced like that ;-). Also there is not real support for 64-bit domains at all, although in one or two places I

This round implements all of the review comments from V2 and all patches are now acked. Unless there are any objections I intend to apply later this morning. Ian.

Hello everyone, this is the fourth version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See

Hello everyone, this is the very first version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See