a11c33863f
5281fad4-numa-sched-leave-node-affinity-alone-if-not-in-auto-mode.patch 52820823-nested-SVM-adjust-guest-handling-of-structure-mappings.patch 52820863-VMX-don-t-crash-processing-d-debug-key.patch 5282492f-x86-eliminate-has_arch_mmios.patch 52864df2-credit-Update-other-parameters-when-setting-tslice_ms.patch 52864f30-fix-leaking-of-v-cpu_affinity_saved-on-domain-destruction.patch 5289d225-nested-VMX-don-t-ignore-mapping-errors.patch 528a0eb0-x86-consider-modules-when-cutting-off-memory.patch 528f606c-x86-hvm-reset-TSC-to-0-after-domain-resume-from-S3.patch 528f609c-x86-crash-disable-the-watchdog-NMIs-on-the-crashing-cpu.patch 52932418-x86-xsave-fix-nonlazy-state-handling.patch - Add missing requires to pciutils package for xend-tools - bnc#851749 - Xen service file does not call xend properly xend.service - bnc#851386 - VUL-0: xen: XSA-78: Insufficient TLB flushing in VT-d (iommu) code 528a0e5b-TLB-flushing-in-dma_pte_clear_one.patch - bnc#849667 - VUL-0: xen: XSA-74: Lock order reversal between page_alloc_lock and mm_rwlock CVE-2013-4553-xsa74.patch - bnc#849665 - VUL-0: CVE-2013-4551: xen: XSA-75: Host crash due to guest VMX instruction execution 52809208-nested-VMX-VMLANUCH-VMRESUME-emulation-must-check-permission-1st.patch - bnc#849668 - VUL-0: xen: XSA-76: Hypercalls exposed to privilege rings 1 and 2 of HVM guests OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=279
108 lines
4.0 KiB
Diff
108 lines
4.0 KiB
Diff
References: bnc#833483
|
|
|
|
# Commit c1f2dfe8f6a559bc28935f24e31bb33d17d9713d
|
|
# Date 2013-11-08 11:08:32 +0100
|
|
# Author Jan Beulich <jbeulich@suse.com>
|
|
# Committer Jan Beulich <jbeulich@suse.com>
|
|
x86/EFI: make trampoline allocation more flexible
|
|
|
|
Certain UEFI implementations reserve all memory below 1Mb at boot time,
|
|
making it impossible to properly allocate the chunk necessary for the
|
|
trampoline. Fall back to simply grabbing a chunk from EfiBootServices*
|
|
regions immediately prior to calling ExitBootServices().
|
|
|
|
Signed-off-by: Jan Beulich <jbeulich@suse.com>
|
|
Acked-by: Keir Fraser <keir@xen.org>
|
|
|
|
--- a/xen/arch/x86/efi/boot.c
|
|
+++ b/xen/arch/x86/efi/boot.c
|
|
@@ -746,6 +746,22 @@ static void __init relocate_image(unsign
|
|
extern const s32 __trampoline_rel_start[], __trampoline_rel_stop[];
|
|
extern const s32 __trampoline_seg_start[], __trampoline_seg_stop[];
|
|
|
|
+static void __init relocate_trampoline(unsigned long phys)
|
|
+{
|
|
+ const s32 *trampoline_ptr;
|
|
+
|
|
+ trampoline_phys = phys;
|
|
+ /* Apply relocations to trampoline. */
|
|
+ for ( trampoline_ptr = __trampoline_rel_start;
|
|
+ trampoline_ptr < __trampoline_rel_stop;
|
|
+ ++trampoline_ptr )
|
|
+ *(u32 *)(*trampoline_ptr + (long)trampoline_ptr) += phys;
|
|
+ for ( trampoline_ptr = __trampoline_seg_start;
|
|
+ trampoline_ptr < __trampoline_seg_stop;
|
|
+ ++trampoline_ptr )
|
|
+ *(u16 *)(*trampoline_ptr + (long)trampoline_ptr) = phys >> 4;
|
|
+}
|
|
+
|
|
void EFIAPI __init __attribute__((__noreturn__))
|
|
efi_start(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
|
|
{
|
|
@@ -765,7 +781,6 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SY
|
|
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *mode_info;
|
|
EFI_FILE_HANDLE dir_handle;
|
|
union string section = { NULL }, name;
|
|
- const s32 *trampoline_ptr;
|
|
struct e820entry *e;
|
|
u64 efer;
|
|
bool_t base_video = 0;
|
|
@@ -1268,23 +1283,13 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SY
|
|
cfg.size = trampoline_end - trampoline_start;
|
|
status = efi_bs->AllocatePages(AllocateMaxAddress, EfiLoaderData,
|
|
PFN_UP(cfg.size), &cfg.addr);
|
|
- if ( EFI_ERROR(status) )
|
|
+ if ( status == EFI_SUCCESS )
|
|
+ relocate_trampoline(cfg.addr);
|
|
+ else
|
|
{
|
|
cfg.addr = 0;
|
|
- blexit(L"No memory for trampoline\r\n");
|
|
+ PrintStr(L"Trampoline space cannot be allocated; will try fallback.\r\n");
|
|
}
|
|
- trampoline_phys = cfg.addr;
|
|
- /* Apply relocations to trampoline. */
|
|
- for ( trampoline_ptr = __trampoline_rel_start;
|
|
- trampoline_ptr < __trampoline_rel_stop;
|
|
- ++trampoline_ptr )
|
|
- *(u32 *)(*trampoline_ptr + (long)trampoline_ptr) +=
|
|
- trampoline_phys;
|
|
- for ( trampoline_ptr = __trampoline_seg_start;
|
|
- trampoline_ptr < __trampoline_seg_stop;
|
|
- ++trampoline_ptr )
|
|
- *(u16 *)(*trampoline_ptr + (long)trampoline_ptr) =
|
|
- trampoline_phys >> 4;
|
|
|
|
/* Initialise L2 identity-map and boot-map page table entries (16MB). */
|
|
for ( i = 0; i < 8; ++i )
|
|
@@ -1400,10 +1405,14 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SY
|
|
type = E820_RESERVED;
|
|
break;
|
|
case EfiConventionalMemory:
|
|
- case EfiLoaderCode:
|
|
- case EfiLoaderData:
|
|
case EfiBootServicesCode:
|
|
case EfiBootServicesData:
|
|
+ if ( !trampoline_phys && desc->PhysicalStart + len <= 0x100000 &&
|
|
+ len >= cfg.size && desc->PhysicalStart + len > cfg.addr )
|
|
+ cfg.addr = (desc->PhysicalStart + len - cfg.size) & PAGE_MASK;
|
|
+ /* fall through */
|
|
+ case EfiLoaderCode:
|
|
+ case EfiLoaderData:
|
|
if ( desc->Attribute & EFI_MEMORY_WB )
|
|
type = E820_RAM;
|
|
else
|
|
@@ -1431,6 +1440,12 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SY
|
|
++e820nr;
|
|
}
|
|
}
|
|
+ if ( !trampoline_phys )
|
|
+ {
|
|
+ if ( !cfg.addr )
|
|
+ blexit(L"No memory for trampoline");
|
|
+ relocate_trampoline(cfg.addr);
|
|
+ }
|
|
|
|
status = efi_bs->ExitBootServices(ImageHandle, map_key);
|
|
if ( EFI_ERROR(status) )
|