ppc64le sysfs and mm update
Resolves: #2026579 Signed-off-by: Robbie Harwood <rharwood@redhat.com>
This commit is contained in:
Robbie Harwood
parent
611ca8bf3e
commit
36401863be
@ -0,0 +1,70 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Mukesh Kumar Chaurasiya <mchauras@linux.vnet.ibm.com>
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Date: Thu, 9 Feb 2023 13:09:16 +0530
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Subject: [PATCH] osdep/linux/hostdisk: Modify sector by sysfs as disk sector
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The disk sector size provided by sysfs file system considers the sector
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size of 512 irrespective of disk sector size, thus causing the read by
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the GRUB to an incorrect offset from what was originally intended.
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Considering the 512 sector size of sysfs data the actual sector needs to
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be modified corresponding to disk sector size.
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Signed-off-by: Mukesh Kumar Chaurasiya <mchauras@linux.vnet.ibm.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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(cherry picked from commit f7564844f82b57078d601befadc438b5bc1fa01b)
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---
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grub-core/osdep/linux/hostdisk.c | 7 ++++---
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include/grub/disk.h | 7 +++++++
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2 files changed, 11 insertions(+), 3 deletions(-)
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diff --git a/grub-core/osdep/linux/hostdisk.c b/grub-core/osdep/linux/hostdisk.c
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index 7bc99ac1c1..a9ea0bb465 100644
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--- a/grub-core/osdep/linux/hostdisk.c
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+++ b/grub-core/osdep/linux/hostdisk.c
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@@ -240,7 +240,8 @@ have_devfs (void)
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#pragma GCC diagnostic ignored "-Wformat-nonliteral"
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static int
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-grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector)
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+grub_hostdisk_linux_find_partition (const grub_disk_t disk, char *dev,
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+ grub_disk_addr_t sector)
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{
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size_t len = strlen (dev);
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const char *format;
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@@ -305,7 +306,7 @@ grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector)
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if (fstat (fd, &st) < 0
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|| !grub_util_device_is_mapped_stat (&st)
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|| !grub_util_get_dm_node_linear_info (st.st_rdev, 0, 0, &start))
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- start = grub_util_find_partition_start_os (real_dev);
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+ start = grub_disk_to_native_sector (disk, grub_util_find_partition_start_os (real_dev));
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/* We don't care about errors here. */
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grub_errno = GRUB_ERR_NONE;
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@@ -386,7 +387,7 @@ grub_util_fd_open_device (const grub_disk_t disk, grub_disk_addr_t sector, int f
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&& strncmp (dev, "/dev/", 5) == 0)
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{
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if (sector >= part_start)
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- is_partition = grub_hostdisk_linux_find_partition (dev, part_start);
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+ is_partition = grub_hostdisk_linux_find_partition (disk, dev, part_start);
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else
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*max = part_start - sector;
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}
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diff --git a/include/grub/disk.h b/include/grub/disk.h
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index 06210a7049..881addcc77 100644
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--- a/include/grub/disk.h
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+++ b/include/grub/disk.h
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@@ -208,6 +208,13 @@ grub_disk_from_native_sector (grub_disk_t disk, grub_disk_addr_t sector)
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return sector << (disk->log_sector_size - GRUB_DISK_SECTOR_BITS);
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}
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+/* Convert from GRUB native disk sized sector to disk sized sector. */
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+static inline grub_disk_addr_t
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+grub_disk_to_native_sector (grub_disk_t disk, grub_disk_addr_t sector)
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+{
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+ return sector >> (disk->log_sector_size - GRUB_DISK_SECTOR_BITS);
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+}
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+
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/* This is called from the memory manager. */
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void grub_disk_cache_invalidate_all (void);
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145
0320-mm-Adjust-new-region-size-to-take-management-overhea.patch
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145
0320-mm-Adjust-new-region-size-to-take-management-overhea.patch
Normal file
@ -0,0 +1,145 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Zhang Boyang <zhangboyang.id@gmail.com>
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Date: Sun, 29 Jan 2023 19:49:31 +0800
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Subject: [PATCH] mm: Adjust new region size to take management overhead into
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account
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When grub_memalign() encounters out-of-memory, it will try
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grub_mm_add_region_fn() to request more memory from system firmware.
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However, the size passed to it doesn't take region management overhead
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into account. Adding a memory area of "size" bytes may result in a heap
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region of less than "size" bytes really available. Thus, the new region
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may not be adequate for current allocation request, confusing
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out-of-memory handling code.
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This patch introduces GRUB_MM_MGMT_OVERHEAD to address the region
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management overhead (e.g. metadata, padding). The value of this new
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constant must be large enough to make sure grub_memalign(align, size)
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always succeeds after a successful call to
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grub_mm_init_region(addr, size + align + GRUB_MM_MGMT_OVERHEAD),
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for any given addr and size (assuming no integer overflow).
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The size passed to grub_mm_add_region_fn() is now correctly adjusted,
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thus if grub_mm_add_region_fn() succeeded, current allocation request
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can always succeed.
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Signed-off-by: Zhang Boyang <zhangboyang.id@gmail.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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(cherry picked from commit 2282cbfe5aa1ff6c1bbcbdcd2003089ad7c03ba3)
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---
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grub-core/kern/mm.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++---
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1 file changed, 61 insertions(+), 3 deletions(-)
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diff --git a/grub-core/kern/mm.c b/grub-core/kern/mm.c
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index da1ac9427c..f29a3e5cbd 100644
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--- a/grub-core/kern/mm.c
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+++ b/grub-core/kern/mm.c
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@@ -83,6 +83,46 @@
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+/*
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+ * GRUB_MM_MGMT_OVERHEAD is an upper bound of management overhead of
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+ * each region, with any possible padding taken into account.
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+ *
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+ * The value must be large enough to make sure grub_memalign(align, size)
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+ * always succeeds after a successful call to
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+ * grub_mm_init_region(addr, size + align + GRUB_MM_MGMT_OVERHEAD),
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+ * for any given addr, align and size (assuming no interger overflow).
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+ *
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+ * The worst case which has maximum overhead is shown in the figure below:
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+ *
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+ * +-- addr
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+ * v |<- size + align ->|
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+ * +---------+----------------+----------------+------------------+---------+
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+ * | padding | grub_mm_region | grub_mm_header | usable bytes | padding |
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+ * +---------+----------------+----------------+------------------+---------+
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+ * |<- a ->|<- b ->|<- c ->|<- d ->|<- e ->|
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+ * ^
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+ * b == sizeof (struct grub_mm_region) | / Assuming no other suitable
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+ * c == sizeof (struct grub_mm_header) | | block is available, then:
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+ * d == size + align +-| If align == 0, this will be
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+ * | the pointer returned by next
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+ * Assuming addr % GRUB_MM_ALIGN == 1, then: | grub_memalign(align, size).
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+ * a == GRUB_MM_ALIGN - 1 | If align > 0, this chunk may
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+ * | need to be split to fulfill
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+ * Assuming d % GRUB_MM_ALIGN == 1, then: | alignment requirements, and
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+ * e == GRUB_MM_ALIGN - 1 | the returned pointer may be
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+ * \ inside these usable bytes.
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+ * Therefore, the maximum overhead is:
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+ * a + b + c + e == (GRUB_MM_ALIGN - 1) + sizeof (struct grub_mm_region)
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+ * + sizeof (struct grub_mm_header) + (GRUB_MM_ALIGN - 1)
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+ */
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+#define GRUB_MM_MGMT_OVERHEAD ((GRUB_MM_ALIGN - 1) \
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+ + sizeof (struct grub_mm_region) \
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+ + sizeof (struct grub_mm_header) \
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+ + (GRUB_MM_ALIGN - 1))
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+
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+/* The size passed to grub_mm_add_region_fn() is aligned up by this value. */
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+#define GRUB_MM_HEAP_GROW_ALIGN 4096
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+
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grub_mm_region_t grub_mm_base;
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grub_mm_add_region_func_t grub_mm_add_region_fn;
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@@ -230,6 +270,11 @@ grub_mm_init_region (void *addr, grub_size_t size)
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grub_dprintf ("regions", "No: considering a new region at %p of size %" PRIxGRUB_SIZE "\n",
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addr, size);
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+ /*
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+ * If you want to modify the code below, please also take a look at
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+ * GRUB_MM_MGMT_OVERHEAD and make sure it is synchronized with the code.
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+ */
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+
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/* Allocate a region from the head. */
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r = (grub_mm_region_t) ALIGN_UP ((grub_addr_t) addr, GRUB_MM_ALIGN);
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@@ -410,6 +455,7 @@ grub_memalign (grub_size_t align, grub_size_t size)
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{
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grub_mm_region_t r;
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grub_size_t n = ((size + GRUB_MM_ALIGN - 1) >> GRUB_MM_ALIGN_LOG2) + 1;
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+ grub_size_t grow;
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int count = 0;
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if (!grub_mm_base)
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@@ -418,10 +464,22 @@ grub_memalign (grub_size_t align, grub_size_t size)
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if (size > ~(grub_size_t) align)
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goto fail;
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+ /*
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+ * Pre-calculate the necessary size of heap growth (if applicable),
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+ * with region management overhead taken into account.
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+ */
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+ if (grub_add (size + align, GRUB_MM_MGMT_OVERHEAD, &grow))
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+ goto fail;
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+
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+ /* Align up heap growth to make it friendly to CPU/MMU. */
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+ if (grow > ~(grub_size_t) (GRUB_MM_HEAP_GROW_ALIGN - 1))
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+ goto fail;
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+ grow = ALIGN_UP (grow, GRUB_MM_HEAP_GROW_ALIGN);
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+
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/* We currently assume at least a 32-bit grub_size_t,
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so limiting allocations to <adress space size> - 1MiB
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in name of sanity is beneficial. */
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- if ((size + align) > ~(grub_size_t) 0x100000)
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+ if (grow > ~(grub_size_t) 0x100000)
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goto fail;
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align = (align >> GRUB_MM_ALIGN_LOG2);
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@@ -447,7 +505,7 @@ grub_memalign (grub_size_t align, grub_size_t size)
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count++;
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if (grub_mm_add_region_fn != NULL &&
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- grub_mm_add_region_fn (size, GRUB_MM_ADD_REGION_CONSECUTIVE) == GRUB_ERR_NONE)
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+ grub_mm_add_region_fn (grow, GRUB_MM_ADD_REGION_CONSECUTIVE) == GRUB_ERR_NONE)
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goto again;
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/* fallthrough */
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@@ -462,7 +520,7 @@ grub_memalign (grub_size_t align, grub_size_t size)
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* Try again even if this fails, in case it was able to partially
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* satisfy the request
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*/
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- grub_mm_add_region_fn (size, GRUB_MM_ADD_REGION_NONE);
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+ grub_mm_add_region_fn (grow, GRUB_MM_ADD_REGION_NONE);
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goto again;
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}
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53
0321-mm-Preallocate-some-space-when-adding-new-regions.patch
Normal file
53
0321-mm-Preallocate-some-space-when-adding-new-regions.patch
Normal file
@ -0,0 +1,53 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Zhang Boyang <zhangboyang.id@gmail.com>
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Date: Sun, 29 Jan 2023 19:49:32 +0800
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Subject: [PATCH] mm: Preallocate some space when adding new regions
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When grub_memalign() encounters out-of-memory, it will try
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grub_mm_add_region_fn() to request more memory from system firmware.
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However, it doesn't preallocate memory space for future allocation
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requests. In extreme cases, it requires one call to
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grub_mm_add_region_fn() for each memory allocation request. This can
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be very slow.
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This patch introduces GRUB_MM_HEAP_GROW_EXTRA, the minimal heap growth
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granularity. The new region size is now set to the bigger one of its
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original value and GRUB_MM_HEAP_GROW_EXTRA. Thus, it will result in some
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memory space preallocated if current allocations request is small.
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The value of GRUB_MM_HEAP_GROW_EXTRA is set to 1MB. If this value is
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smaller, the cost of small memory allocations will be higher. If this
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value is larger, more memory will be wasted and it might cause
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out-of-memory on machines with small amount of RAM.
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Signed-off-by: Zhang Boyang <zhangboyang.id@gmail.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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(cherry picked from commit 21869baec15239b6d99122b32b14a778af4c754f)
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---
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|
grub-core/kern/mm.c | 6 ++++++
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|
1 file changed, 6 insertions(+)
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diff --git a/grub-core/kern/mm.c b/grub-core/kern/mm.c
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|
index f29a3e5cbd..cc8a4703bc 100644
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|
--- a/grub-core/kern/mm.c
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|
+++ b/grub-core/kern/mm.c
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|
@@ -123,6 +123,9 @@
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|
/* The size passed to grub_mm_add_region_fn() is aligned up by this value. */
|
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|
#define GRUB_MM_HEAP_GROW_ALIGN 4096
|
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|
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|
+/* Minimal heap growth granularity when existing heap space is exhausted. */
|
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|
+#define GRUB_MM_HEAP_GROW_EXTRA 0x100000
|
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|
+
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|
grub_mm_region_t grub_mm_base;
|
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|
grub_mm_add_region_func_t grub_mm_add_region_fn;
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|
|
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|
@@ -471,6 +474,9 @@ grub_memalign (grub_size_t align, grub_size_t size)
|
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|
if (grub_add (size + align, GRUB_MM_MGMT_OVERHEAD, &grow))
|
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|
goto fail;
|
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|
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|
+ /* Preallocate some extra space if heap growth is small. */
|
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|
+ grow = grub_max (grow, GRUB_MM_HEAP_GROW_EXTRA);
|
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|
+
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|
/* Align up heap growth to make it friendly to CPU/MMU. */
|
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|
if (grow > ~(grub_size_t) (GRUB_MM_HEAP_GROW_ALIGN - 1))
|
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|
goto fail;
|
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72
0322-mm-Avoid-complex-heap-growth-math-in-hot-path.patch
Normal file
72
0322-mm-Avoid-complex-heap-growth-math-in-hot-path.patch
Normal file
@ -0,0 +1,72 @@
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|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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|
From: Zhang Boyang <zhangboyang.id@gmail.com>
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|
Date: Sun, 29 Jan 2023 19:49:33 +0800
|
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|
Subject: [PATCH] mm: Avoid complex heap growth math in hot path
|
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|
|
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|
We do a lot of math about heap growth in hot path of grub_memalign().
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|
However, the result is only used if out of memory is encountered, which
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|
is seldom.
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|
|
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|
This patch moves these calculations away from hot path. These
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|
calculations are now only done if out of memory is encountered. This
|
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|
change can also help compiler to optimize integer overflow checks away.
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|
|
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|
Signed-off-by: Zhang Boyang <zhangboyang.id@gmail.com>
|
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|
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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|
(cherry picked from commit 65bc45963014773e2062ccc63ff34a089d2e352e)
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|
---
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|
grub-core/kern/mm.c | 34 ++++++++++++++++++++--------------
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|
1 file changed, 20 insertions(+), 14 deletions(-)
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|
|
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|
diff --git a/grub-core/kern/mm.c b/grub-core/kern/mm.c
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|
index cc8a4703bc..630d7be0e2 100644
|
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|
--- a/grub-core/kern/mm.c
|
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|
+++ b/grub-core/kern/mm.c
|
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|
@@ -467,20 +467,7 @@ grub_memalign (grub_size_t align, grub_size_t size)
|
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|
if (size > ~(grub_size_t) align)
|
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|
goto fail;
|
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|
|
||||||
|
- /*
|
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|
- * Pre-calculate the necessary size of heap growth (if applicable),
|
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|
- * with region management overhead taken into account.
|
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|
- */
|
||||||
|
- if (grub_add (size + align, GRUB_MM_MGMT_OVERHEAD, &grow))
|
||||||
|
- goto fail;
|
||||||
|
-
|
||||||
|
- /* Preallocate some extra space if heap growth is small. */
|
||||||
|
- grow = grub_max (grow, GRUB_MM_HEAP_GROW_EXTRA);
|
||||||
|
-
|
||||||
|
- /* Align up heap growth to make it friendly to CPU/MMU. */
|
||||||
|
- if (grow > ~(grub_size_t) (GRUB_MM_HEAP_GROW_ALIGN - 1))
|
||||||
|
- goto fail;
|
||||||
|
- grow = ALIGN_UP (grow, GRUB_MM_HEAP_GROW_ALIGN);
|
||||||
|
+ grow = size + align;
|
||||||
|
|
||||||
|
/* We currently assume at least a 32-bit grub_size_t,
|
||||||
|
so limiting allocations to <adress space size> - 1MiB
|
||||||
|
@@ -510,6 +497,25 @@ grub_memalign (grub_size_t align, grub_size_t size)
|
||||||
|
/* Request additional pages, contiguous */
|
||||||
|
count++;
|
||||||
|
|
||||||
|
+ /*
|
||||||
|
+ * Calculate the necessary size of heap growth (if applicable),
|
||||||
|
+ * with region management overhead taken into account.
|
||||||
|
+ */
|
||||||
|
+ if (grub_add (grow, GRUB_MM_MGMT_OVERHEAD, &grow))
|
||||||
|
+ goto fail;
|
||||||
|
+
|
||||||
|
+ /* Preallocate some extra space if heap growth is small. */
|
||||||
|
+ grow = grub_max (grow, GRUB_MM_HEAP_GROW_EXTRA);
|
||||||
|
+
|
||||||
|
+ /* Align up heap growth to make it friendly to CPU/MMU. */
|
||||||
|
+ if (grow > ~(grub_size_t) (GRUB_MM_HEAP_GROW_ALIGN - 1))
|
||||||
|
+ goto fail;
|
||||||
|
+ grow = ALIGN_UP (grow, GRUB_MM_HEAP_GROW_ALIGN);
|
||||||
|
+
|
||||||
|
+ /* Do the same sanity check again. */
|
||||||
|
+ if (grow > ~(grub_size_t) 0x100000)
|
||||||
|
+ goto fail;
|
||||||
|
+
|
||||||
|
if (grub_mm_add_region_fn != NULL &&
|
||||||
|
grub_mm_add_region_fn (grow, GRUB_MM_ADD_REGION_CONSECUTIVE) == GRUB_ERR_NONE)
|
||||||
|
goto again;
|
||||||
@ -316,3 +316,7 @@ Patch0315: 0315-ieee1275-support-runtime-memory-claiming.patch
|
|||||||
Patch0316: 0316-ieee1275-implement-vec5-for-cas-negotiation.patch
|
Patch0316: 0316-ieee1275-implement-vec5-for-cas-negotiation.patch
|
||||||
Patch0317: 0317-ibmvtpm-Add-support-for-trusted-boot-using-a-vTPM-2..patch
|
Patch0317: 0317-ibmvtpm-Add-support-for-trusted-boot-using-a-vTPM-2..patch
|
||||||
Patch0318: 0318-powerpc-Drop-Open-Hack-Ware.patch
|
Patch0318: 0318-powerpc-Drop-Open-Hack-Ware.patch
|
||||||
|
Patch0319: 0319-osdep-linux-hostdisk-Modify-sector-by-sysfs-as-disk-.patch
|
||||||
|
Patch0320: 0320-mm-Adjust-new-region-size-to-take-management-overhea.patch
|
||||||
|
Patch0321: 0321-mm-Preallocate-some-space-when-adding-new-regions.patch
|
||||||
|
Patch0322: 0322-mm-Avoid-complex-heap-growth-math-in-hot-path.patch
|
||||||
|
|||||||
@ -16,7 +16,7 @@
|
|||||||
Name: grub2
|
Name: grub2
|
||||||
Epoch: 1
|
Epoch: 1
|
||||||
Version: 2.06
|
Version: 2.06
|
||||||
Release: 60%{?dist}
|
Release: 61%{?dist}
|
||||||
Summary: Bootloader with support for Linux, Multiboot and more
|
Summary: Bootloader with support for Linux, Multiboot and more
|
||||||
License: GPLv3+
|
License: GPLv3+
|
||||||
URL: http://www.gnu.org/software/grub/
|
URL: http://www.gnu.org/software/grub/
|
||||||
@ -533,6 +533,10 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
|
|||||||
%endif
|
%endif
|
||||||
|
|
||||||
%changelog
|
%changelog
|
||||||
|
* Mon Feb 20 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-61
|
||||||
|
- ppc64le sysfs and mm update
|
||||||
|
- Resolves: #2026579
|
||||||
|
|
||||||
* Wed Feb 15 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-60
|
* Wed Feb 15 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-60
|
||||||
- Sync patches with Fedora
|
- Sync patches with Fedora
|
||||||
- Resolves: #2007427
|
- Resolves: #2007427
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user