When SME is enabled in the first kernel, we will allocate pages for kdump without encryption in order to be able to boot the second kernel in the same manner as kexec, which helps to keep the same code style.
Signed-off-by: Lianbo Jiang <[email protected]> --- kernel/kexec_core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index 20fef1a..3c22a9b 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -471,6 +471,16 @@ static struct page *kimage_alloc_crash_control_pages(struct kimage *image, } } + if (pages) { + unsigned int count, i; + + pages->mapping = NULL; + set_page_private(pages, order); + count = 1 << order; + for (i = 0; i < count; i++) + SetPageReserved(pages + i); + arch_kexec_post_alloc_pages(page_address(pages), 1 << order, 0); + } return pages; } @@ -865,6 +875,7 @@ static int kimage_load_crash_segment(struct kimage *image, result = -ENOMEM; goto out; } + arch_kexec_post_alloc_pages(page_address(page), 1, 0); ptr = kmap(page); ptr += maddr & ~PAGE_MASK; mchunk = min_t(size_t, mbytes, @@ -882,6 +893,7 @@ static int kimage_load_crash_segment(struct kimage *image, result = copy_from_user(ptr, buf, uchunk); kexec_flush_icache_page(page); kunmap(page); + arch_kexec_pre_free_pages(page_address(page), 1); if (result) { result = -EFAULT; goto out; -- 2.9.5 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
