queue-3.0/xen-p2m-reserve-8mb-of-_brk-space-for-p2m-leafs-when-populating-back.patch
queue-3.4/xen-p2m-reserve-8mb-of-_brk-space-for-p2m-leafs-when-populating-back.patch
s390-compat-fix-mmap-compat-system-calls.patch
fuse-verify-all-ioctl-retry-iov-elements.patch
-xen-p2m-reserve-8mb-of-_brk-space-for-p2m-leafs-when-populating-back.patch
xen-mark-local-pages-as-foreign-in-the-m2p_override.patch
drm-i915-correctly-order-the-ring-init-sequence.patch
drm-radeon-do-not-reenable-crtc-after-moving-vram-start-address.patch
+++ /dev/null
-From 5bc6f9888db5739abfa0cae279b4b442e4db8049 Mon Sep 17 00:00:00 2001
-From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-Date: Mon, 30 Jul 2012 10:18:05 -0400
-Subject: xen/p2m: Reserve 8MB of _brk space for P2M leafs when populating back.
-
-From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-
-commit 5bc6f9888db5739abfa0cae279b4b442e4db8049 upstream.
-
-When we release pages back during bootup:
-
-Freeing 9d-100 pfn range: 99 pages freed
-Freeing 9cf36-9d0d2 pfn range: 412 pages freed
-Freeing 9f6bd-9f6bf pfn range: 2 pages freed
-Freeing 9f714-9f7bf pfn range: 171 pages freed
-Freeing 9f7e0-9f7ff pfn range: 31 pages freed
-Freeing 9f800-100000 pfn range: 395264 pages freed
-Released 395979 pages of unused memory
-
-We then try to populate those pages back. In the P2M tree however
-the space for those leafs must be reserved - as such we use extend_brk.
-We reserve 8MB of _brk space, which means we can fit over
-1048576 PFNs - which is more than we should ever need.
-
-Without this, on certain compilation of the kernel we would hit:
-
-(XEN) domain_crash_sync called from entry.S
-(XEN) CPU: 0
-(XEN) RIP: e033:[<ffffffff818aad3b>]
-(XEN) RFLAGS: 0000000000000206 EM: 1 CONTEXT: pv guest
-(XEN) rax: ffffffff81a7c000 rbx: 000000000000003d rcx: 0000000000001000
-(XEN) rdx: ffffffff81a7b000 rsi: 0000000000001000 rdi: 0000000000001000
-(XEN) rbp: ffffffff81801cd8 rsp: ffffffff81801c98 r8: 0000000000100000
-(XEN) r9: ffffffff81a7a000 r10: 0000000000000001 r11: 0000000000000003
-(XEN) r12: 0000000000000004 r13: 0000000000000004 r14: 000000000000003d
-(XEN) r15: 00000000000001e8 cr0: 000000008005003b cr4: 00000000000006f0
-(XEN) cr3: 0000000125803000 cr2: 0000000000000000
-(XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e02b cs: e033
-(XEN) Guest stack trace from rsp=ffffffff81801c98:
-
-.. which is extend_brk hitting a BUG_ON.
-
-Interestingly enough, most of the time we are not going to hit this
-b/c the _brk space is quite large (v3.5):
- ffffffff81a25000 B __brk_base
- ffffffff81e43000 B __brk_limit
-= ~4MB.
-
-vs earlier kernels (with this back-ported), the space is smaller:
- ffffffff81a25000 B __brk_base
- ffffffff81a7b000 B __brk_limit
-= 344 kBytes.
-
-where we would certainly hit this and hit extend_brk.
-
-Note that git commit c3d93f880197953f86ab90d9da4744e926b38e33
-(xen: populate correct number of pages when across mem boundary (v2))
-exposed this bug).
-
-[v1: Made it 8MB of _brk space instead of 4MB per Jan's suggestion]
-
-Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- arch/x86/xen/p2m.c | 5 +++++
- 1 file changed, 5 insertions(+)
-
---- a/arch/x86/xen/p2m.c
-+++ b/arch/x86/xen/p2m.c
-@@ -192,6 +192,11 @@ RESERVE_BRK(p2m_mid_mfn, PAGE_SIZE * (MA
- * boundary violation will require three middle nodes. */
- RESERVE_BRK(p2m_mid_identity, PAGE_SIZE * 2 * 3);
-
-+/* When we populate back during bootup, the amount of pages can vary. The
-+ * max we have is seen is 395979, but that does not mean it can't be more.
-+ * But some machines can have 3GB I/O holes even. So lets reserve enough
-+ * for 4GB of I/O and E820 holes. */
-+RESERVE_BRK(p2m_populated, PMD_SIZE * 4);
- static inline unsigned p2m_top_index(unsigned long pfn)
- {
- BUG_ON(pfn >= MAX_P2M_PFN);
s390-compat-fix-mmap-compat-system-calls.patch
dma-imx-dma-fix-kernel-crash-due-to-missing-clock-conversion.patch
fuse-verify-all-ioctl-retry-iov-elements.patch
-xen-p2m-reserve-8mb-of-_brk-space-for-p2m-leafs-when-populating-back.patch
xen-mark-local-pages-as-foreign-in-the-m2p_override.patch
drm-i915-prefer-wide-slow-to-fast-narrow-in-dp-configs.patch
drm-nvd0-disp-mask-off-high-16-bit-of-negative-cursor-x-coordinate.patch
+++ /dev/null
-From 5bc6f9888db5739abfa0cae279b4b442e4db8049 Mon Sep 17 00:00:00 2001
-From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-Date: Mon, 30 Jul 2012 10:18:05 -0400
-Subject: xen/p2m: Reserve 8MB of _brk space for P2M leafs when populating back.
-
-From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-
-commit 5bc6f9888db5739abfa0cae279b4b442e4db8049 upstream.
-
-When we release pages back during bootup:
-
-Freeing 9d-100 pfn range: 99 pages freed
-Freeing 9cf36-9d0d2 pfn range: 412 pages freed
-Freeing 9f6bd-9f6bf pfn range: 2 pages freed
-Freeing 9f714-9f7bf pfn range: 171 pages freed
-Freeing 9f7e0-9f7ff pfn range: 31 pages freed
-Freeing 9f800-100000 pfn range: 395264 pages freed
-Released 395979 pages of unused memory
-
-We then try to populate those pages back. In the P2M tree however
-the space for those leafs must be reserved - as such we use extend_brk.
-We reserve 8MB of _brk space, which means we can fit over
-1048576 PFNs - which is more than we should ever need.
-
-Without this, on certain compilation of the kernel we would hit:
-
-(XEN) domain_crash_sync called from entry.S
-(XEN) CPU: 0
-(XEN) RIP: e033:[<ffffffff818aad3b>]
-(XEN) RFLAGS: 0000000000000206 EM: 1 CONTEXT: pv guest
-(XEN) rax: ffffffff81a7c000 rbx: 000000000000003d rcx: 0000000000001000
-(XEN) rdx: ffffffff81a7b000 rsi: 0000000000001000 rdi: 0000000000001000
-(XEN) rbp: ffffffff81801cd8 rsp: ffffffff81801c98 r8: 0000000000100000
-(XEN) r9: ffffffff81a7a000 r10: 0000000000000001 r11: 0000000000000003
-(XEN) r12: 0000000000000004 r13: 0000000000000004 r14: 000000000000003d
-(XEN) r15: 00000000000001e8 cr0: 000000008005003b cr4: 00000000000006f0
-(XEN) cr3: 0000000125803000 cr2: 0000000000000000
-(XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e02b cs: e033
-(XEN) Guest stack trace from rsp=ffffffff81801c98:
-
-.. which is extend_brk hitting a BUG_ON.
-
-Interestingly enough, most of the time we are not going to hit this
-b/c the _brk space is quite large (v3.5):
- ffffffff81a25000 B __brk_base
- ffffffff81e43000 B __brk_limit
-= ~4MB.
-
-vs earlier kernels (with this back-ported), the space is smaller:
- ffffffff81a25000 B __brk_base
- ffffffff81a7b000 B __brk_limit
-= 344 kBytes.
-
-where we would certainly hit this and hit extend_brk.
-
-Note that git commit c3d93f880197953f86ab90d9da4744e926b38e33
-(xen: populate correct number of pages when across mem boundary (v2))
-exposed this bug).
-
-[v1: Made it 8MB of _brk space instead of 4MB per Jan's suggestion]
-
-Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- arch/x86/xen/p2m.c | 5 +++++
- 1 file changed, 5 insertions(+)
-
---- a/arch/x86/xen/p2m.c
-+++ b/arch/x86/xen/p2m.c
-@@ -194,6 +194,11 @@ RESERVE_BRK(p2m_mid_mfn, PAGE_SIZE * (MA
- * boundary violation will require three middle nodes. */
- RESERVE_BRK(p2m_mid_identity, PAGE_SIZE * 2 * 3);
-
-+/* When we populate back during bootup, the amount of pages can vary. The
-+ * max we have is seen is 395979, but that does not mean it can't be more.
-+ * But some machines can have 3GB I/O holes even. So lets reserve enough
-+ * for 4GB of I/O and E820 holes. */
-+RESERVE_BRK(p2m_populated, PMD_SIZE * 4);
- static inline unsigned p2m_top_index(unsigned long pfn)
- {
- BUG_ON(pfn >= MAX_P2M_PFN);
projects / thirdparty / kernel / stable-queue.git / commitdiff
