From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: [PATCH 03/38] arm: handy function to print a walk of a domain's p2m. Date: Fri, 1 Jun 2012 15:39:32 +0000 Message-ID: <1338565207-2888-3-git-send-email-ian.campbell@citrix.com> References: <1338565113.17466.141.camel@zakaz.uk.xensource.com> <1338565207-2888-1-git-send-email-ian.campbell@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1338565207-2888-1-git-send-email-ian.campbell@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Ian Campbell List-Id: xen-devel@lists.xenproject.org Useful for debug but not actually used in this patch. Signed-off-by: Ian Campbell --- xen/arch/arm/p2m.c | 34 ++++++++++++++++++++++++++++++++++ xen/include/asm-arm/page.h | 1 + 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index 4f624d8..fdbecbc 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -5,6 +5,40 @@ #include #include +void dump_p2m_lookup(struct domain *d, paddr_t addr) +{ + struct p2m_domain *p2m = &d->arch.p2m; + lpae_t *first = NULL, *second = NULL, *third = NULL; + + printk("dom%d IPA %#016llx\n", d->domain_id, addr); + + first = __map_domain_page(p2m->first_level); + printk("1ST[%#03llx] = %#016llx\n", + first_table_offset(addr), + first[first_table_offset(addr)].bits); + if ( !first[first_table_offset(addr)].p2m.valid || + !first[first_table_offset(addr)].p2m.table ) + goto done; + + second = map_domain_page(first[first_table_offset(addr)].p2m.base); + printk("2ND[%#03llx] = %#016llx\n", + second_table_offset(addr), + second[second_table_offset(addr)].bits); + if ( !second[second_table_offset(addr)].p2m.valid || + !second[second_table_offset(addr)].p2m.table ) + goto done; + + third = map_domain_page(second[second_table_offset(addr)].p2m.base); + printk("3RD[%#03llx] = %#016llx\n", + third_table_offset(addr), + third[third_table_offset(addr)].bits); + +done: + if (third) unmap_domain_page(third); + if (second) unmap_domain_page(second); + if (first) unmap_domain_page(first); +} + void p2m_load_VTTBR(struct domain *d) { struct p2m_domain *p2m = &d->arch.p2m; diff --git a/xen/include/asm-arm/page.h b/xen/include/asm-arm/page.h index 22c56b5..c7b6530 100644 --- a/xen/include/asm-arm/page.h +++ b/xen/include/asm-arm/page.h @@ -313,6 +313,7 @@ static inline uint64_t gva_to_ipa(uint32_t va) #define PAR_FAULT 0x1 extern void dump_pt_walk(uint32_t addr); +extern void dump_p2m_lookup(struct domain *d, paddr_t addr); #endif /* __ASSEMBLY__ */ -- 1.7.9.1