search for: pfec_write_access

One could even debate whether reserved bit faults are always fatal (and should never be propagated to the guest)... Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: 2008-01-28/xen/arch/x86/traps.c =================================================================== --- 2008-01-28.orig/xen/arch/x86/traps.c 2008-01-28 11:31:44.000000000 +0100 +++ 2008-01-28/xen/arch/x86/traps.c

...fault if we fail */ +#define BAD_GVA_TO_GFN (~0UL) +#define BAD_GFN_TO_MFN (~1UL) +#define READONLY_GFN (~2UL) +static mfn_t emulate_gva_to_mfn( + struct vcpu *v, + unsigned long vaddr) +{ + unsigned long gfn; + mfn_t mfn; + p2m_type_t p2mt; + uint32_t pfec = PFEC_page_present | PFEC_write_access; + + /* Translate the VA to a GFN */ + gfn = paging_gva_to_gfn(v, vaddr, &pfec); + if ( gfn == INVALID_GFN ) + { + hvm_inject_exception(TRAP_page_fault, pfec, vaddr); + return _mfn(BAD_GVA_TO_GFN); + } + + /* Translate the GFN to an MFN */ + mfn = gfn_to_mfn(v...

From: Zhang Xiantao <xiantao.zhang@intel.com> With virtual EPT support, L1 hyerpvisor can use EPT hardware for L2 guest''s memory virtualization. In this way, L2 guest''s performance can be improved sharply. According to our testing, some benchmarks can show > 5x performance gain. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Zhang Xiantao (11):

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